The Al, Zr, and Ti modified MCM-41 materials were prepared by the post-synthesis method, and then the Ni-W species were introduced on them by using the co-impregnation method in order to obtain high-performance hydrodenitrogenation (HDN) catalysts. The activity of the catalysts was evaluated by the HDN reaction of quinoline. The optimum HDN activity was observed on the catalyst sup...

Mesoporous alumina catalysts that incorporate nickel (Ni-Alumina) with different Ni/Al molar ratios of 1:2, 1:5 and 1:10 were synthesized by a one-step sol–gel method using lauric acid as a template. The prepared Ni-Alumina catalysts showed a relatively high surface area with a narrow pore size distribution after calcination at 700 ◦C; these effects were independent of the Ni/Al molar ratio. Al...

Electrocatalysis has become an important topic in various areas of research, including chemical catalysis, environmental and engineering. There have been a multitude different catalysts used the electrocatalytic reduction CO2, which include large classes materials such as transition metal oxide nanoparticles (TMO), (TMNp), carbon-based nanomaterials, sulfides (TMS), well porphyrins phthalocyani...

Abstract A kinetic model was developed by taking into account the dynamic nature of active sites in Mars–van Krevelen type catalytic reactions to predict evolution reactant and product composition gas phase CuCl2 concentration solid catalyst. The at steady-state ethylene oxychlorination obtained combining transient experiments two half-reactions redox cycle, namely reduced CuCl oxidation oxygen...

Reinvestigation of the Lewis acid catalyzed rearrangement of some open-chain permethyloligosilanes with the Al(Fe)Cl(3) catalyst system exhibited several cases of additional reactivity: namely, a fragmentation/cyclization reaction. Introduction of (trimethylsilyl)methyl substituents into the oligosilane substrates strongly facilitated this reaction, yielding cyclic or bicyclic carbacyclosilanes...

Monodisperse Cu nanoparticles (NPs) assembled on a pyridinic-N rich graphene (p-NG) support show a Cu NP massand size-dependent catalysis for the selective electrochemical reduction of CO2 to ethylene (C2H4). For the 7 nm Cu NPs assembled on the p-NG with the p-NG/Cu mass ratio of 1:1, the C2H4 formation Faradaic efficiency and hydrocarbon selectivity reach 19% and 79% respectively at -0.9 V (v...

A variable-low-temperature scanning tunneling microscope (STM) was used to observe oxygen (O2), ethylene (C2H4), and acetylene (C2H2) molecules on a Ag(110) surface and the various complexes that were formed between these two hydrocarbons and oxygen at 13 K. Ethylene molecule(s) were moved to the vicinity of O2 either by STM tunneling electrons at 13 K or thermally at 45 K to form (C2H4)x-O2 (x...

Glycerol is the main byproduct of biodiesel production and its increased production volume derives from the increasing demand for biofuels. The conversion of glycerol to hydrogen-rich mixtures presents an attractive route towards sustainable biodiesel production. Here we explored the use of Pt/Al(2)O(3)-based catalysts for the catalytic steam reforming of glycerol, evidencing the influence of L...

In this work, we offer an understanding of the potassium impact on performance cobalt-zeolite catalysts in ethanol steam reforming process (ESR) conditions. The catalytic behavior undoped and K-doped cobalt-containing materials (10 wt% cobalt) is discussed concerning their structure surface properties. 2K/CoY 4K/CoY samples, where was introduced HY support together with cobalt phase upon incipi...