Nitrogen/oxygen co-doped porous carbon with excellent textural properties was synthesized from biomass for CO2 capture using the freeze-drying and non-thermal plasma treatment methods. Quantum chemical calculations were performed to reveal the CO2 adsorption mechanism. Various nitrogen and oxygen functional groups can be produced on carbon surface during air-plasma treatment. Plasma treatment hardly

Walnut shell residues have been used as sacrificial template in the synthesis of TiO2-based materials, via mechanochemical synthesis. In order to improve the photocatalytic efficiency of the synthesized titania, functionalization with ceria and zircona was also investigated. Samples were characterized using a multitechnique approach, including XRD, XPS, UV-visible spectroscopy and SEM. The synthesized

A comparative study of morphology and properties of poly(butylene terephthalate)/carbon nanotubes (PBT/CNTs) nanocomposites with non-reactive and reactive elastomer was comprehensively performed. The carboxyl functionalized CNTs showed uniform dispersion and formed an interconnecting network structure at relatively high content in both nanocomposites. However, the location of CNTs and the resulting

This study was conducted to investigate the conditions used to prepare Pt/TiO2 catalysts via a liquid-phase reduction method and to analyze the room-temperature oxidation characteristics of formaldehyde (HCHO) upon application of the catalysts. We found that the major factors determining catalyst activity during catalyst preparation were the temperature used in liquid-phase reduction, the Pt/N2H4 ratio

Hydrogenolysis of xylitol can produce value-added glycols and alcohols for industrial chemicals. However, it is often carried out under elevated temperature and pressure, causing unfavorable catalyst deactivation and significant formation of side products. Catalytic transfer hydrogenolysis of xylitol, under much milder condition, is largely unexplored in this field. Herein, we reported transfer hydrogenolysis

Strong metal-Bronsted acid interaction is critical for interfacial catalysis. Tunable electronic coupling at metal-acid interface for tandem C-H and C-O bond activation has been largely unexplored. We reported a simple design principle for Pt-Fe3+ interfacial catalysts to tailor electron structure between metallic and structural acidic framework via the strong Pt-Bronsted acid interaction, for cascade

Preparation of electrode materials with rich redox peaks, fast ion passage channels and excellent cycling stability through a cost-effective process is vital important for supercapacitors (SCs). In this work, we successfully fabricated a bimetal selenide NiFe2Se4 through a simple and low-cost electrodeposition method. The resulting NiFe2Se4 electrode prepared at an optimized condition deliver a high

Highly active molecular catalysts for olefin polymerization are extremely difficult to run in High Throughput Experimentation (HTE) platforms. With common activators like e.g. methylalumoxane (MAO) or a combination of tri-iso-butylaluminum and trityl tetrakis(perfluorophenyl)borate (TIBA/TTB), the necessary downscaling ends up with (sub)nanomole precatalyst loadings and poorly reproducible results

The present study focuses on a new method for obtaining C2–C3 carbonyl compounds (ketones and aldehydes) by the gas-phase selective oxidation of a propane–propylene mixture using nitrous oxide (N2O). The oxidation is carried out without catalyst in the temperature range of 623 773K at elevated pressure. The obtained results reveal that only propylene in the propane–propylene mixture reacts with nitrous

Global demand for nuclear energy is expected to rise in the coming decades. To meet these growing needs, new uranium resources must be explored. One of the potential alternatives to traditional uranium mining is oceanic uranium. The capture and recovery of uranium from the ocean has been under investigation for some time, with many recent studies focused on amidoxime-based adsorbents. These adsorbents

A series of trimetallic Prussian blue analogues (PBA) has been synthesized by adding Fe or Cu to five types of bimetallic PBAs: FeCoPBA, CdCoPBA, CoCoPBA, MnCoPBA, ZnCoPBA. Such compounds have been characterized by scanning electron microscopy (SEM), infrared spectroscopy (IR), and X-ray diffraction (XRD) measurement. They generally had smaller particle sizes and weaker diffraction peaks than the corresponding

A Pt/TiO2 catalyst fabricated via a sacrificial carbon layer strategy has been studied for the selective catalytic reduction of NOx with H2. Modified Pt/TiO2 exhibited superior low-temperature activity for the reduction of NOx in a wide temperature window (100-250℃). Through the sacrificial carbon layer strategy the strong metal-support interaction (SMSI) was induced over the modified Pt/TiO2. SMSI

Abstract: The production of high-value added chemicals from the degradation of real lignin still has been an unresolved issue. In this study, a two-step strategy was proposed to obtain n-hexanol from alkali lignin, high conversion of alkali lignin and selectivity of n-hexanol were achieved. The deoxygenation performance of the synthesized Ni-HZSM-5 catalyst, modified by Ca, was efficiently improved

To investigate the influence of dilute acid pickling on pyrolysis behavior and product distribution during rape straw (RS) pyrolysis, HCl、HF and HCl + HF were selected. The proximate and ultimate analysis, ICP-AES, SEM and BET were employed to examine the composition and the physico-chemical properties of biomass. It’s found that the alkali and alkaline earth metals (AAEMs) in RS were obviously removed

This study introduces a pinch-based method to design an internally heat-integrated pressure swing distillation (HIPSD) with a double annular column. In the configuration, the annular stripping section of a low pressure (LP) column partially wraps around the rectifying section of an inner high pressure (HP) column to minimize exergy loss. In order to enable adequate heat transfer and azeotropic separation

The optimization of batch processes usually relies on the availability of a detailed knowledge-driven model. However, because of the great varieties of industrial batch processes and their small production rates, a knowledge-driven model might not always be available. In such a case, a data-driven model, developed after a limited number of experiments, is an attractive alternative. Here we apply, in

Accurate prediction of pressure drops around trays or packing sections is crucial for optimal design of distillation columns. However, simultaneous optimization of stage hydraulics and all operating and structural parameters with rigorous MESH model is still difficult because of both the convergence problem and integer optimization problem. In this work, a rigorous equilibrium stage based pseudo-transient

Pinch Analysis helps in achieving sustainable development through conserving resources in various source-sink resource conservation networks. Diverse applications and methodologies of Pinch Analysis primarily consider only exact and precise parameters without accounting for variabilities and uncertainties. With the unavailability of past data and lack of proper understanding of different operations

The framework aluminum (AlF) has a correlation relationship with the acid sites in the zeolite, which has been regarded as the key point during the adsorption behavior in alkylation of benzene with methanol. Here, the AlF distribution in HZSM-5 channels was successfully controlled by different organic structural directing agents (OSDAs) in the synthesis step. HZSM-5 samples with AlF preferentially

Multi-wall carbon nanotubes (MW-CNTs) were generated from recycled low density polyethylene (LDPE). The polymer was pyrolyzed at 800 ºC in inert atmospheres and the gaseous pyrolyzates – light hydrocarbons and hydrogen- served as carbon donors for the MW-CNTs, which were catalytically grown by chemical vapor deposition (CVD) at 800 ºC. This investigation examined the influences of carrier gas type

In order to promote the recycling of carbon fiber reinforced plastic (CFRP), catalytic cracking of hazardous gases generated by thermal decomposition from epoxy-based CFRP composites was performed. We aimed for selective phenol recovery and hazardous gas removal using a zeolite catalyst. The BEA type zeolite with Si/Al = 92.5 showed high conversion and low naphthalene selectivity. Thermal decomposition

In this work, a highly efficient flame retardant and electromagnetic interference shielding (EMI) coating on cotton fabric was fabricated by a simple solution impregnation and dip-coating method, which involved three layers of polyacetimidate (PEI), ammonium polyphosphate (APP) and Ti3C2Tx. When exposed directly to flame, the PEI/APP coating lead to a char layer resulting in self-extinguishing performance

A series of PLLA-b-PMMA block copolymers with well-defined chemical structures was synthesized by ring-opening polymerization followed by atom-transfer radical polymerization. These copolymers were investigated as effective A-b-C-type compatibilizers for poly(lactic acid) (PLA) and renewable poly(epichlorohydrin-co-ethylene oxide) (ECO) elastomer blends. Compared to the neat binary PLA/ECO blend, the

A facile aerosol-assisted technique was employed in the design of a new class of composite zeolite catalyst material with spherical morphology. This technique enables the one-step encapsulation of zeolite microcrystals into the matrix of spherical mesoporous silica microparticle supports such as MCM-41. By introducing pre-synthesized zeolite microcrystals into precursor solutions containing the templating

In this work, the carbothermal reduction and hydrochloric acid leaching were utilized for separation and recovery of iron and rare earth from the Bayan Obo tailings. The effects of temperature, addition of calcium oxide and reaction time on the metallization rate of iron during roasting were investigated. The results showed that the metallization rate of iron reached 99.67% and the loss rate of fluorine

Developing a structured catalyst was performed successfully and ruthenium catalysts supported by carbon-coated aluminum foams were prepared. Seven different characterization techniques such as SEM, TEM, XPS, TPR, ICP-MS, CO chemisorption and nitrogen physisorption were applied on the solid catalysts. The carbon-coated foams were checked for their mechanical stability and the results indicated that

Singlet oxygen (1O2)-based homogeneous oxidation processes have been extensively investigated for selective degradation of organic substrates. Herein, to address the existing limitations of these homogeneous systems, we rationally designed a heterogeneous 1O2-mediated flow-through electrochemical system based on a functional carbon nanotubes cathode filter. We showed that hydrogen peroxide (H2O2),

Results about the kinetics of extraction of Eu(III) and Am(III) by extractants designed for the industrial reprocessing of nuclear wastes are reported. They were obtained using the rotating membrane cell technique (RMC). Extraction and stripping kinetic rate constants were determined for various compositions of the aqueous and organic phases. The transfer was studied at liquid/liquid interfaces between

Abstract: Turning waste plastics (WPs) into valuable fuels and chemicals by catalytic pyrolysis is a promising strategy for alleviating fast fossil oil consumption and white pollution, where activated carbon (AC) is an emerging efficient catalyst but is not yet well studied. Herein, the corncob-derived ACs were prepared differently and used to conduct catalytic pyrolysis of low-density polyethylene

The kinetics of ultraviolet light-induced solution ATRP of methyl acrylate using titanium oxide (TiO2) was investigated through experiments and modelling by the method of moments. The apparent rate coefficient for activator (re)generation accounting for the variation of the amount of TiO2 was fitted to match the experimental data. The amplification experiments were then conducted to interpret and better

An unprecedentedly facile, cheap, green, and scalable approach to fabricate cobalt oxides nanoparticles has been developed in this work. By directly annealing cobalt acetate tetrahydrate, Co3O4 with a trace amount of CoO was formed at 300 ℃ in the air. A rapid morphological change (< 30 min) from chunk to nanoparticles is elucidated. When applied as the anode material for lithium-ion batteries (LIBs)

Development of integrated processes that can concentrate and oxidize volatile organic compounds (VOCs) from process streams or polluted air in an adsorptive reactor provides a cost-effective alternative to current VOCs abatement technologies. Here, we report simultaneous adsorption and oxidation of toluene as a VOC model compound over TiO2/SiO2 and ZrO2/SiO2 mixed-metal oxides (MMOs) with varied composition

Membrane technology without phase change process demonstrated its low-cost, high energy efficiency advantages. High fractional free volume PIMs such as poly (1-trimethylsilyl-1-propyne) (PTMSP) is known for its high permeability, but disappointing gas selectivity. Porous aromatic frameworks and hypercrosslinked polymers (HCPs) are effective membrane additives, however prior works have examined performance