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

Over the years, there have been many, many contributions to Industrial & Engineering Chemistry Research (I&EC Research) made by researchers in China. We are pleased to have four Associate Editors based in China, at Tianjin University and Zhejiang University, who are leading researchers in their fields. We also have many editorial advisory board members from institutions in China, and we appreciate

In this study, cellulose nanocrystals with cellulose crystal structure I (CNCs I) and with coexisting cellulose crystalline structures I and II (CNCs I-II) were isolated from pine cellulose using acid hydrolysis with H2SO4. It was possible to obtain CNCs with different morphologies, crystallinities and crystalline structures adjusting only the reaction conditions. The thermal stability is directly

The adhesion of drug-loaded hydrogels for topical therapy often drastically deteriorated in humid environment, leading an ineffective therapeutic concentration. It is necessary to develop a valid strategy for resisting adhesion damage from abundant body fluids and hydrogel detachment from external forces. Herein, we report a mussel-inspired hydrogel adhesive through the introduction of 3, 4-dihydroxyphenylalanine

Bacterial colonization poses significant health risks, such as, infestation of surfaces in biomedical applications and clean water unavailability. If maintaining the surrounding water clean is a target, developing surfaces with strong bactericidal action, which is facilitated by bacterial access to the surface and mixing, can be a solution. On the other hand, if sustenance of a surface free of bacteria

To improve the mechanical properties of biodegradable bioplastic poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH), silica particles (SiO2) filler is mixed with PHBH; however, SiO2 shows low compatibility with PHBH. Herein, to enhance the interfacial adhesion of SiO2 and PHBH, the PHBH-grafted SiO2 (SiO2-PHBH) fillers were prepared from propargyl-terminated PHBH and azide-modified SiO2 by click

In this article, we present a facile approach, pyrolysis end-doping (PED), to finely tune pore-structure to optimize separation properties of polyimide-derived asymmetric carbon molecular sieve (CMS) hollow fiber membranes. The PED approach creates CMS fibers with highly attractive transport properties using argon with 10 ppm oxygen for 1-minute at the end of a conventional high-temperature pyrolysis

This paper uses a multi-scale approach to study the preferential surface adsorption of bio-based rejuvenators to siliceous substrates, used here as surrogates for mineral stones like quartz in bituminous composites. Bituminous composites are the main building blocks of asphalt pavements and roofing shingles. Various rejuvenators including bio-based rejuvenators are commonly used to extend the service

Furfural oxidation with hydrogen peroxide was performed using sulphated zirconia as an acid catalyst within the temperature range 40-90oC. The catalytic behavior of sulphated zirconia due to its acidic character was different from a previously studied fibrous polymer-supported sulphonic acid catalyst Smopex-101. While maleic and succinic acids along with 2(5-H) furanone and formic acid were formed

In this work, towards uniform in situ carbon coating on nano-LiFePO4 (nano-LFP) via a solid-state reaction, we systematically investigated the effects of the heating rate on the characteristics of the product and process with nano-FePO4 as the template and iron source. It was found that the high reactivity of nano-FePO4 almost eliminated the effect of the heating rate on the phase transformation of