An error appeared in our paper entitled “Enhanced Biosynthesis of Furoic Acid via the Effective Pretreatment of Corncob into Furfural in the Biphasic Media” published in Catalysis Letters. Unfortunately, there are some mistakes in the values and equation in the Sect. 2.3 Conversion of Corncob to FAL and in Table 2.

Abstract In this work, a new viral protein cage based nanoreactor was successfully constructed via encapsulating Tween 80 stabilized palladium nanoparticles (NPs) into rotavirus capsid VP2 virus-like particles (i.e. Pd@VP2). The effects of stabilizers including CTAB, SDS, Tween 80 and PVP on controlling the particle size of Pd NPs were investigated. They were further immobilized on graphene oxide (i

An error appeared in our paper entitled “para-Toluenesulfonic Acid Catalyzed Synthesis of Indenes a Tandem Friedel–Crafts Alkylation/Hydroarylation of Tertiary Propargylic Alcohols with Electron-Rich Arenes” published in Catalysis Letters. The word “via” was unfortunately missed to include in the article title. The correct title is as follows, para-Toluenesulfonic Acid Catalyzed Synthesis of Indenes

Abstract Mono-dispersed nanometals could act as excellent cocatalysts. However, nanometals were apt to be oxidized and aggregated, and their activity was decreased. Herein, well-dispersed and small-sized Cu nanoparticles controlled by the mesoporous of TiO2 microspheres (TiO2 MS) were prepared. It was found that the Cu implanted into the hybrid (Cu–TiO2 MS) was mainly in the form of Cu0 with high dispersion

Abstract In this study, a new kind of magnetic vanadium-based catalyst was successfully prepared and employed to produce 2, 5-diformylfuran (DFF) in the liquid phase through selective oxidation of biomass-derived 5-hydroxymethylfurfur (HMF) with air as oxidant. It was found that magnetic Fe3O4 nanoparticles supported NH4·V3O8 showed excellent catalytic performance with the achievement of 95.5% HMF

Abstract Iron molybdate/molybdenum oxide catalysts with varying content of Mo (Mo/Fe = 1.6 and 2.0) were synthesized by a mild hydrothermal method and structurally characterized by XRD, XPS, Raman spectroscopy, SEM–EDX, BET and ICP-OES. The stability of the prepared catalysts in selective oxidation of methanol to formaldehyde was investigated by catalytic activity measurements for up to 100 h on stream

Abstract Developing highly efficient heterogeneous catalysts for cycloaddition of CO2 and epoxides to produce cyclic carbonates is promising but challenging. In this work, a novel three-dimensional metal organic framework (MOF) with cylinder pore systems and unsaturated Zn sites has been demonstrated as potent candidate in CO2 fixation at mild and solvent-free conditions. The Zn(atz)(bdc)0.5, where

Abstract In this paper, the MgO–SiO2 catalyst was prepared with the deposition–precipitation method, which was used to catalyse the conversion of ethanol to 1,3-butadiene through a two-step process. The carbon deposition deactivation of the catalyst was mainly caused by that the carbon species occupied the acid-basic active sites on the catalyst surface. The carbon deposition mainly includes chain

Abstract FeI2(CO)3PPh3, which usually used as the precursor of [Fe]-hydrogenase, was firstly used as catalyst in one-step hydroxylation of phenol to dihydroxybenzenes. It was found that the reaction can be conducted smoothly in aqueous phase at ambient temperature (25 °C). In the optimum conditions, the conversion of phenol is 26.7% and selectivity of DHB is 80.0%. The possible mechanism was investigated

Abstract Solid acid catalysts are largely used in several industrial processes, and the development of materials with high activity, selectivity and reusability is a subject of study of research groups around the world. The improvement of oxide acidity could be performed by phosphation with phosphoric acid but the investigation of phosphated niobia is still incipient. In this work, niobia was treated

Abstract Recently, improve the protease activity in the presence of organic solvents has been appreciated for the researchers. In the current study, we have tried to increase the organic solvent stability of salinovibrio proteolyticus protease (SVP) by site-directed mutagenesis. Five variants were constructed to substitute the surface charged, and polar amino acid residues in SVP with hydrophobic ones

Abstract The purpose of this study was to efficiently convert the sugary food waste (SFW) to 5-hydroxymethylfurfural (5-HMF) by ultrasound-[Bmim]Cl pretreatment in ionic liquids (ILs)-ion exchange resin system. The effect of ultrasonic pretreatment on SFW and the effect of ultrasonic frequency, ILs, acid resin and catalyst load on SFW conversion were studied. The kinetic curve and the relationship

Abstract Metalporphyrin-based porous polymers supporting high dispersed Pd nanoparticle (NP) catalysts (HUST-1-Pd) were prepared with a novel solvent-knitting hyper-crosslinked polymer method using 5-, 10-, 15-, and 20-tetraphenylporphyrin (TPP) as building blocks. The N2 sorption isotherms of the catalysts show that the HUST-1-Pd possesses many ultra-micropores and continuous mesopores. The NPs are

Abstract Generally, the sulfate (SO·−4) and hydroxyl (HO·) radicals are the dominant active species in most catalytic oxidation processes with peroxymonosulfate (PMS). However, the existence of various natural organic and inorganic matters in aquatic environments might influence the oxidation efficiency of these radicals, and/or form more toxic and refractory intermediates than the parent, especially

Abstract Two silica films -immobilized imidazolium-based ionic liquids (TMICl @silica films) were prepared, characterized and utilized as efficient catalysts for the benzoin reaction. Combined characterization results from FT-IR, elemental analysis, N2 adsorption–desorption isotherms and SEM, suggested that the imidazolium-based ionic liquids were successfully immobilized on the silica films. Moreover

Abstract Exploring highly selective catalysts for CO hydrogenation reactions remains a significant challenge as a critical stage in the conversion of CO resources into chemicals or fuels. Here, we provide guidelines on this issue, exploring the generation of major production in the CO hydrogenation process of M1/W6S8 (M = Ir and Ca) single-atom catalysts, and performing density functional calculations

Composite oxide catalysts with Co/Mn/Ce molar ratio of 3:x:2(x = 1, 3, 5 and 7) have been successfully prepared by co-precipitation method. The crystal phase structure, elemental valence, oxygen vacancy and reductivity of the catalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), H2 temperature program reduction(H2-TPR)

Abstract The key challenge for CO2 methanation, an eight-electron process under kinetic limitation, relies on the design of non-noble metal catalysts so as to achieve high activity at low reaction temperatures. In this work, four Ni-based catalysts with different supports were prepared and tested for CO2 methanation at 250–550 °C in a fixed bed quartz reactor and further characterized to reveal the

Abstract Iridium–nickel (Ir–Ni) film is of great interest for catalytic and corrosive environment applications. Ir–Ni thin films as an electrocatalyst for hydrogen evolution reaction (HER) were galvanostatically electrodeposited on copper (Cu) foam from an electrolyte containing 13.5 mM sodium hexabromoiridate(III) and 40.5 mM Ni sulphate hexahydrate, simultaneously compared with electrodeposited Ir

Abstract The silanol defects in ZSM-5 zeolite have been recognized as an important factor in catalytic activity. Here, ZSM-5 zeolites with different amounts of silanol defect sites were synthesized from synthetic gels containing fluoride medium and were applied as catalysts for trioxane synthesis. The results of XRD, SEM, NH3-TPD, Py-IR, OH-IR, 27Al MAS NMR, 1H MAS NMR, and TG indicated that all ZSM-5

Abstract Hierarchical Fe,Cu/ZSM-5 was prepared by post-synthesis treatment of nanocrystallite B–ZSM-5. The hierarchical MFI zeolites containing Fe and/or Cu were characterized with XRD, FT-IR, SEM, UV–Vis and N2-sorption techniques. UV–Vis and FT-IR spectroscopy demonstrated that some of the Fe and Cu cations were incorporated into the zeolite framework. Direct amination of benzene to aniline with

Abstract The effect of the polar head and the concentration of quaternary ammonium surfactants (C14EtOH, C14iPrOH, C14PrOH, where, 14 = carbon number iPrOH = iso-propanol, EtOH = ethanol, PrOH = propanol) in micellar catalysis for the cross-condensation reaction (Claisen–Schmidt) was investigated. The reaction in the Micellar-NaOH system with different concentrations of surfactants above the critical

Abstract In this paper, the kinetic of CO2 dry reforming with CH4 (DRM) over the Ni-Mg15@HC catalyst was studied after excluding the influence of internal and external mass transfer at 700–850 °C. At the same time, the partial pressures of CH4 and CO2 were varied from 10 to 50 kPa. The experimental results demonstrated that the reaction rate was sharply increased with the increase of CH4 partial pressure

Abstract This study presents the effective thermal design concept of exothermic Sabatier reactor, which shall convert carbon dioxide with hydrogen to produce water and methane (so-called “methanation”) assisted by the catalytic activity. Pellet type of Ru-based catalyst is packed in the preheated reactor tube and stoichiometric reactant gas mixture (CO2 and H2) flows at the prescribed flow rate. By

Abstract Pr-modified Fe–Mn/TiO2 (x Pr) catalysts with high activity and excellent SO2 resistance were prepared and used for the selective catalytic reduction of NO with NH3 (NH3-SCR) at low-temperatures. Pr can inhibit FeOx and MnOx crystallization and stabilize the high valence states of Fe and Mn, maintaining the catalyst’s high activity and stability at low temperatures. Doping with Pr diminished

Abstract Acetylene chemical process, especially catalyzing acetylene acetoxylation for the synthesis of vinyl acetate (VAc), has attracted wide attention in coal-rich countries. Although great efforts have been made to prepare different catalysts to improve the VAc synthesis via acetylene acetoxylation, the acetic acid (HAc) conversion cannot achieve a satisfactory level, much lower than 60%. Herein

Abstract The aim of present study was to investigate the influence of oxygen percentage (1–80%), temperature (20 and 100 °C) and the addition of TiO2 catalyst on the production of ozone O3 and nitrous oxide N2O by DBD. The production efficiency of O3 increased with O2 percentage while the production efficiency of N2O had a maximum at approximately 20% of O2. The production of O3 slightly decreased

Abstract Photoexcited TiO2 dispersed in a de-aerated acetonitrile/2-propanol (CH3CN/2-PrOH) reaction mixture catalyzes the quick and selective reduction of 5-nitrosalicylic acid methyl ester to the corresponding aniline, an immediate precursor of the drug mesalazine. The transformation is selective also when the starting concentration of nitro compound is increased by orders of magnitude and occurs

Aiming to develop an effective catalytic process for utilizing biomass, conversion of corncob into furfural was firstly performed using tin-loaded bentonite (Sn-BTN) as solid acid catalyst. Corncob was pretreated with Sn-BTN (3.5 wt%) for producing furfural at 53.3% yield in methyl isobutyl ketone-water (5:5, v:v; pH 1.0) biphasic media within 0.5 h at 170 °C. Furthermore, an efficient Sn-BTN recycling

Abstract Novel thiol functionalized xylose hydrochar microspheres supported palladium nanoparticles (C–SH–Pd) were synthesized by gentle heating of palladium (II) acetate and thiol functionalized xylose hydrochar (C–SH) in ethanol. The as-prepared C–SH–Pd exhibited high catalytic activity towards Suzuki reactions with a yield of high up to 100%. Moreover, it could be reused for at least five times

Abstract New recyclable monoaza-15-crown ethers have been synthesized starting from (R,R)-(+)- and (S,S)-(−)-hydrobenzoin. These macrocycles proved to be efficient and reusable phase transfer catalysts in a few asymmetric reactions under mild conditions. The asymmetric epoxidation of trans-chalcone took place with up to 81% ee, while using other chalcone derivatives, the products were formed with 68–88%

Abstract Hydrodeoxygenation (HDO) of m-cresol using H2 produced by dehydrogenation of n-hexane to hexenes is demonstrated at 673 K over a Pt-WOx/C catalyst at 36 bar. The reaction is possible because deactivation of Pt/C during n-hexane dehydrogenation is greatly suppressed at higher pressures. Flow-reactor measurements of pure n-hexane over Pt/C showed rapid deactivation at 1 bar and 773 K but the

Abstract A new method to prepare Cu/ZrO2 catalysts by reducing CuO/ZrO2 with hydrazine hydrate is reported, and the prepared catalysts were used to synthesize disodium iminodiacetate by diethanolamine dehydrogenation. Hydrazine hydrate can rapidly reduce the CuO/ZrO2 precursor powder in an alkaline environment at a moderate temperature. The ratio of Cu0/Cu+ at the Cu/ZrO2 surface was controlled by

Abstract Photocatalytic reduction of CO2 with H2O is a fascinating approach to convert CO2 into available fuels using solar energy as driven force. However, it still suffers from low efficiency owing to the instinct stability of CO2. In this work, a hybrid photocatalyst of rutile TiO2 nanorods supported on MgAl layered double oxides (TiO2/MgAl-LDO) were designed and facilely fabricated via an in situ

Abstract Ordered mesoporous carbon based catalyst (MCC catalyst) derived from microalgal waste biomass was prepared through condensation and hydrothermal post-treatment process at 90 °C and 120 °C, respectively. Biochar obtained from pyrolysis of the waste was sulfonated in concentrated H2SO4 solution at 150 °C for 15 h to introduce sulfonic groups to the biochar’s structure consisting of condensed

Abstract Propylene epoxidation by oxygen over Cu-based catalysts is a most ideal and economical process. The unsupported CuOx nanoparticles were synthesized by liquid phase reduction method. The crystalline phase and size of CuOx nanoparticles were characterized by XRD and TEM, respectively. The catalytic performances of CuOx with different pretreatment temperatures and atmospheres were also investigated

Abstract Silica-supported hafinum phosphide (HfP/SiO2) was prepared and applied as an effective solid acid catalyst to drive furfural production from xylan. Various characterizations were employed to analyze the intrinsic properties of the HfP/SiO2 catalyst, and the effects of process parameters on its performance were investigated in detail. The results showed that the performance of the HfP/SiO2

Abstract Present work is focused on development of methodology involving utilization of cost effective, highly effective heterogeneous catalyst prepared from wood ash for carbonyl exchange reaction between long chain alcohols and diethyl carbonate to produce long-chain dialkyl carbonates. Whereas long-chain dialkyl carbonates are being explored as value added compounds as they are environmentally safe

Abstract The Cu-based perovskite shows good methanol selectivity but low CO2 conversion in CO2 hydrogenation to methanol. After treated by NaBH4 liquid reduction, perovskite LaCuZn sample (l-LCZ) is reduced partially, particle size becomes smaller and BET surface area increases. This sample (l-LCZ) was tested for CO2 hydrogenation to methanol direct without H2 reduction, and the catalytic activity

Abstract N-hydroxyphthalimide (NHPI) is a promising catalyst in aerobic oxidation of hydrocarbons to corresponding hydroperoxides. We have found that a trace amount of Fe(benz)3 or Fe(acac)3 (in concentration of less than 10−1 mmol/l and with the ratio of Fe(III): NHPI = 1:500) considerably accelerates the oxidation of cyclohexene and ethylbenzene, while retaining the selectivity to hydroperoxides

Abstract A magnetic nanocomposite of GO-Fe3O4@CuO was fabricated via a simple sonochemical technique and successfully utilized for the ultrasound promoted synthesis of regioselective 1,4-disubstituted mono/bis/tris-1,2,3-triazoles (3a–k). This catalyst could be separated conveniently from the reaction mixture using an external magnet and reused up to eight consecutive runs without noticeable drop in

Abstract In this study, Fe3O4@LDH@cysteine–Cu(I) nanoparticles as a novel and recyclable catalytic system was designed and successfully synthesized. These nanoparticles show high catalytic activity for preparation of the triazole family through reaction of the organic halides with alkynes in the presence of choline azide as reagent and reaction medium. In addition, Fe3O4@LDH@cysteine–Cu(I) could be

Abstract We examined the synthetic and catalytic claims that immobilization of an Fe-PNP pincer complex (1) on an amine-modified graphene oxide support yields a useful heterogeneous catalyst for the Suzuki biaryl cross-coupling reaction. Complex 1 is not formed under the reported conditions, rather the iron sulfate heptahydrate starting material (melanterite) undergoes partial dehydration to give iron

Abstract In the present study, copper complex supported on surface-modified Fe3O4/SiO2 nanoparticles (Fe3O4@SiO2–Glycerole–Cu(II)) was successfully fabricated and characterized by fourier transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray mapping, energy-dispersive X-ray spectroscopy (EDS), inductively

Abstract Catalytic oxidation of CO into CO2 using copper–manganese–cerium (Cu–Mn–Ce) ternary oxides pellets represents a promising strategy for CO abatement. In this work, Cu–Mn–Ce ternary oxides catalyst pellets were prepared with different precursors by combining the wet-mixing-kneading and extrusion-spheronization methods. Physicochemical properties of the catalyst pellets were characterized by

Abstract In this work, AgInS2 photoelectrodes doped with Ga element and deposited Co–Pi co–catalyst have been prepared on FTO substrates by hydrothermal and electrochemical deposition methods. In photoelectrochemical (PEC) measurements, the photocurrent density of AgInS2/Ga5%/Co–Pi photoelectrodes (2.18 mA/cm2 at 1.2 V vs. RHE) is about 3.25 times higher than that of pure AgInS2 photoelectrodes (0

Abstract A series of poly(ionic liquid)s-supported N-heterocyclic carbene silver complexes (Poly(NHC-Ag/IL)s), poly(ionic liquid)s (PILs) and poly(N-heterocyclic carbene silver complexes) (Poly(NHC-Ag)s) were prepared through radical co-polymerization of N-vinylimidazolium ionic liquids, NHC-Ag monomers and divinylbenzene, respectively. These polymers were applied to catalyze the cycloaddition reaction

Abstract Ag-loaded TiO2 photocatalysts prepared by photodeposition method in an argon atmosphere exhibited highly selective photocatalytic activity for CO2 reduction with water to produce CO, while the sample prepared under an air atmosphere predominantly promoted water splitting. Graphic Abstract

Abstract Brӧnsted acidic poly ionic liquid (PIL-M) was successfully prepared by free-radical polymerization. The surface area of the heterogeneous catalyst was 301.1 m2/g. The result of thermogravimetric (TG) proved that PIL-M had good thermal stability (decompose at 410 °C). The optimal reaction condition was as follows: 6 wt% catalyst amount, reaction temperature 80 °C, the ratio of methanol to oleic

The bio-metal–organic framework (bio-MOF) notion along with nanoparticles catalysts of Ni@Pd core–shell magnetic for carbon dioxide conversion is made by l-glutamic acid that is the natural substitute for combinatorial ligands, and illustrated their catalytic effect, in the propargylic amines cyclization with carbon dioxide for obtaining 2-oxazolidinones, completed to the correlation of structure–DFT

Abstract Fe-doped mesoporous alumina (MA) was successfully synthesized via a facile one-pot synthesis method. The resulting Fe-doped MA samples possess typical mesoporous structure, relatively high BET surface area, and narrowed pore size diameter. Besides, the iron species are well-dispersed in the alumina matrix, and more importantly, some small oligonuclear iron oxide clusters are linked on the

Abstract A facile one-pot, three component reaction has been developed using aldehydes, nitroalkane and sodium azide with zinc oxide nanocatalyst for the synthesis of 4-aryl-NH-1,2,3-triazoles. ZnO nanoparticles with controlled size (15–25 nm) and morphology were prepared using a sonochemical strategy. Structural and morphological study revealed the growth of well crystalline particles along the c

A trinuclear copper(II) complex, namely [Cu3(L)2(CF3COO)2] (1) is afforded integrating a ‘compartmental’ Schiff base, H2L [where H2L = N,N′-bis(salicylidene)-1,3-propanediamine] and fully characterized. Complex 1 is implemented for electrocatalytic proton reduction to originate molecular hydrogen in a homogenous system. The electrochemical study involving CV (cyclic voltammetry), CPE (controlled potential

Abstract In this work, we synthesized a series of 20% Ni-x% Cu/Al2O3 catalysts containing various Cu loading by the impregnation method and investigated their catalytic performance in the amination of diethylene glycol (DEG) with tertiarybutylamine (TBA) to tertiarybutylaminoethoxyethanol (TBEE). A variety of characterization techniques including XRD, TEM, BET, XPS, H2-TPR, NH3-TPD, CO2-TPD were applied

Abstract Enzyme catalysis is an emerging technique that has been employed to identify the protein of interest in a complex cellular environment. In present article, we have utilized optical techniques for the identification of enzyme mediated catalysis of fusion protein to study the short chain amino acid epitope in both aqueous solution and cellular environment. We characterized enzyme catalysis short

Abstract Ag2O was synthesized by the precipitation method and it was used as support to prepare Ag/Ag2O nanocomposites using different sodium citrate volumes to control the size and amount of Ag nanoparticles. Materials were characterized by X-ray powder diffraction, diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, scanning and transmission electron microscopy and nitrogen adsorption–desorption

Abstract Formic acid (FA) has attracted increasing interest in the utilization as a promising hydrogen carrier. Nitrogen-doped activated carbons were used as support to prepare well-dispersed Pd/C catalyst for hydrogen production from FA. The introduced N species adjusted the electronic properties of Pd and promoted dispersion of Pd, which were beneficial to improve the catalytic activity. Pd supported

Abstract Selective hydrogenolysis of bioglycerol to 1,3-propanedilo (1,3-PDO) is regarded as a perfect combination of a valorization of biomass-derived glycerol and an increasing demand for 1,3-propanediol. In this work, SiO2 gel was impregnated by Al(NO3)3·9H2O followed by a calcination at a high temperature, and a strong interaction between SiO2 and Al2O3 led to a homogeneous dispersion of the Al2O3

Abstract In this report, we documented novel strategy for the synthesis of bioactive polysubstituted 2-amino-4H-chromine derivatives under a heterogeneous Al-MCM-41-LDH@APTES (ALAM) catalysis. A synthetic procedure is developed to prepare Al-MCM-41-LDH@APTES (ALAM) heterogeneous basic catalysts. Mesoporous Al-MCM-41 is functionalized by known grafting chemistry via layered double hydroxide (LDH) nanosheets

Abstract In this study, we synthesized a robust and sustainable Pd/SiO2 nanospheres catalyst. Further, its catalytic activity was demonstrated for the direct reductive coupling of nitroarenes under mild conditions. While the reaction with Pd nanoparticles on other supporting materials such as modified carbon materials and TiO2, under similar conditions, resulted formation of amines exclusively. Therefore