Catalytic Activity of Aliphatic PNP Ligated CoIII/I Amine and Amido Complexes in Hydrogenation Reaction—Structure, Stability, and Substrate Dependence

ACS Catalysis ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 4593-4605
Author(s):  
Jiali Liu ◽  
Zhihong Wei ◽  
Haijun Jiao
Keyword(s):  
Catalytic Activity ◽  
Hydrogenation Reaction ◽  
Structure Stability ◽  
Amido Complexes ◽  
Substrate Dependence

A phosphorene-like InP3 monolayer: structure, stability, and catalytic properties toward the hydrogen evolution reaction

2020 ◽  
Vol 8 (3) ◽  
pp. 1307-1314 ◽  
Author(s):  
Abdul Jalil ◽  
Zhiwen Zhuo ◽  
Zhongti Sun ◽  
Fang Wu ◽  
Chuan Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
First Principles ◽  
Carrier Mobility ◽  
Catalytic Properties ◽  
Structure Stability ◽  
High Catalytic Activity ◽  
First Principles Calculations ◽  
Direct Bandgap

Phosphorene-like InP3 is reported with first-principles calculations, which is a direct-bandgap semiconductor with anisotropic carrier mobility and high catalytic activity toward the hydrogen evolution reaction.

scholarly journals Functional characterization of the non-catalytic ectodomains of the nucleotide pyrophosphatase/phosphodiesterase NPP1

2003 ◽  
Vol 371 (2) ◽  
pp. 321-330 ◽  
Author(s):  
Rik GIJSBERS ◽  
Hugo CEULEMANS ◽  
Mathieu BOLLEN
Keyword(s):  
Catalytic Activity ◽  
Catalytic Domain ◽  
Transmembrane Domain ◽  
Functional Characterization ◽  
Structure Stability ◽  
Subunit Structure ◽  
Terminal Domain ◽  
Nucleotide Pyrophosphatase ◽  
Domain Truncation ◽  
And Function

The ubiquitous nucleotide pyrophosphatases/phosphodiesterases NPP1–3 consist of a short intracellular N-terminal domain, a single transmembrane domain and a large extracellular part, comprising two somatomedin-B-like domains, a catalytic domain and a poorly defined C-terminal domain. We show here that the C-terminal domain of NPP1–3 is structurally related to a family of DNA/RNA non-specific endonucleases. However, none of the residues that are essential for catalysis by the endonucleases are conserved in NPP1–NPP3, suggesting that the nuclease-like domain of NPP1–3 does not represent a second catalytic domain. Truncation analysis revealed that the nuclease-like domain of NPP1 is required for protein stability, for the targeting of NPP1 to the plasma membrane and for the expression of catalytic activity. We also demonstrate that 16 conserved cysteines in the somatomedin-B-like domains of NPP1, in concert with two flanking cysteines, mediate the dimerization of NPP1. The K173Q polymorphism of NPP1, which maps to the second somatomedin-B-like domain and has been associated with the aetiology of insulin resistance, did not affect the dimerization or catalytic activity of NPP1, and did not endow NPP1 with an affinity for the insulin receptor. Our data suggest that the non-catalytic ectodomains contribute to the subunit structure, stability and function of NPP1–3.

Structure, stability, catalytic activity, and polarizabilities of small iridium clusters

2018 ◽  
Vol 27 (6) ◽  
pp. 063102 ◽  
Author(s):  
Francisco E Jorge ◽  
José R da Costa Venâncio
Keyword(s):  
Catalytic Activity ◽  
Structure Stability

CNC-Pincer Rare-Earth Metal Amido Complexes with a Diarylamido Linked Biscarbene Ligand: Synthesis, Characterization, and Catalytic Activity

2014 ◽  
Vol 33 (9) ◽  
pp. 2372-2379 ◽  
Author(s):  
Xiaoxia Gu ◽  
Xiancui Zhu ◽  
Yun Wei ◽  
Shaowu Wang ◽  
Shuangliu Zhou ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Rare Earth ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Amido Complexes ◽  
Ligand Synthesis

Carbon Dioxide Hydrogenation to Methanol over Cu/ZnO-SBA-15 Catalyst: Effect of Metal Loading

2017 ◽  
Vol 380 ◽  
pp. 151-160 ◽  
Author(s):  
Sara Faiz Hanna Tasfy ◽  
Noor Asmawati Mohd Zabidi ◽  
Maizatul Shima Shaharun ◽  
Duvvria Subbarao ◽  
Ahmed Elbagir
Keyword(s):  
Catalytic Activity ◽  
Carbon Source ◽  
Active Sites ◽  
Low Cost ◽  
Fixed Bed ◽  
Textural Properties ◽  
Catalytic Performance ◽  
Hydrogenation Reaction ◽  
Supported Metal Catalysts ◽  
Metal Loading

Utilization of CO2 as a carbon source to produce valuable chemicals is one of the important ways to reduce the global warming caused by increasing CO2 in the atmosphere. Supported metal catalysts are crucial to produce clean and renewable fuels and chemicals from the stable CO2 molecules. The catalytic conversion of CO2 into methanol is recently under increased scrutiny as an opportunity to be used as a low-cost carbon source. Therefore, a series of the bimetallic Cu/ZnO-based catalyst supported by SBA-15 were synthesized via an impregnation technique with different total metal loading and tested in the catalytic hydrogenation of CO2 to methanol. The morphological and textural properties of the synthesized catalysts were determined by transmission electron microscopy (TEM), temperature programmed desorption, reduction, oxidation and pulse chemisorption (TPDRO), and N2-adsorption. The CO2 hydrogenation reaction was performed in a microactivity fixed-bed system at 250oC, 2.25 MPa, and H2/CO2 ratio of 3. Experimental results showed that the catalytic structure and performance were strongly affected by the loading of the active site. Where, the catalytic activity, the methanol selectivity as well as the space-time yield increased with increasing the metal loading until it reaches the maximum values at a metal loading of 15 wt% while further addition of metal inhibits the catalytic performance. The higher catalytic activity of 14% and methanol selectivity of 92% was obtained over a Cu/ZnO-SBA-15 catalyst with a total bimetallic loading of 15 wt%. The excellent performance of 15 wt% Cu/ZnO-SBA-15 catalyst is attributed to the presence of well dispersed active sites with small particle size, higher Cu surface area, and lower catalytic reducibility.

Synthesis, structure and catalytic activity of alkali metal-free bent-sandwiched lanthanide amido complexes with calix[4]-pyrrolyl ligands

2011 ◽  
Vol 40 (37) ◽  
pp. 9447 ◽  
Author(s):  
Shuangliu Zhou ◽  
Shihong Wu ◽  
Hong Zhu ◽  
Shaowu Wang ◽  
Xiancui Zhu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Alkali Metal ◽  
Amido Complexes ◽  
Metal Free
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