So far none of these immobilized catalysts have been used by industry. In this article we critically review the use of immobilized homogeneous catalysts from the point of view of process development for the pharmaceutical and fine chemical industry. The first and foremost question that needs to be...
摘要: Fundamentals of selective and total oxidation catalysis, ammoxidation and oxidative dehydrogenation on metal and metal oxide catalysts are summarized. The main data on structural, surface chemical and catalytic behavior of the main oxidation catalysts used in the industry are discussed....
Niobium pentoxides show high potential as acid catalysts for the sustainable production of fuels and chemicals from inedible biomass sources, but their performance needs to be improved for competing with catalysts currently used in industry1,2,3,4,5. The physical and chemical properties of niobium ...
Plastics are one of the most widely used materials, and, in most cases, they are designed to have long life spans. Since plastic and packaging waste pollut... MC Sarkap,FH Ebi - 《Archives of Environmental Protection》 被引量: 0发表: 2023年 Efcient H2 Production from PET Plastic Wastes...
Catalysts are used extensively in industry to purify and upgrade various feeds and to improve process efficiency. These catalysts lose their activity with time. Spent catalysts from a sulfuric acid plant (main elemental composition: 5.71% V2O5, 1.89% Al2O3, 1.17% Fe2O3and 61.04% SiO2) were ...
Two types of WGS catalysts are used commonly in industry. One is a high-temperature shift catalyst, which is composed of Fe–Cr oxides and is used at 310–450 °C. The other is a low-temperature shift catalyst that consists of Cu–Zn oxides and alumina, and is operated at 180–250 ...
Supported metal nanoparticle catalysts are widely used in industry but suffer from deactivation resulting from metal sintering and coke deposition at high reaction temperatures. Here, we show an efficient and general strategy for the preparation of supported metal nanoparticle catalysts with very high resi...
Cu-based catalysts are commonly used in industry for methanol synthesis. In this study, supported catalysts of 5 wt% Cu/Al2O3 and 5 wt% Cu/ZnO were prepared, and their surface characteristics during H2 reduction and CO2 hydrogenation were investigated using in situ Fourier transform infrared sp...
Furthermore,SINOKLE's ozone catalysts have demonstrated remarkable effects in practical applications. For example, when treating oily wastewater, Colira used carbon-based ozone catalysts to conduct deep treatment on oily wastewater from a petrochemical plant in Xinjiang. With an ozone dosage of 100 pp...
Using an appropriate support material that strongly interacts with the metal species prevents this aggregation, creating stable, finely dispersed metal clusters with a high catalytic activity, an approach industry has used for a long time. Nevertheless, practical supported metal catalysts are inhomogeneous...