2.2 Catalytic Properties and Physicochemical Nature of Highly Active Protons in Partially Reduced Ag3PW12O40

1994 ◽  
pp. 117-128 ◽  
Author(s):  
Toshihide Baba ◽  
Mamoru Nomura ◽  
Yoshio Ono ◽  
Yo-ichi Ohno
Keyword(s):  
Catalytic Properties ◽  
Highly Active

scholarly journals PdCu alloy nanodendrites with tunable composition as highly active electrocatalysts for methanol oxidation

RSC Advances ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. 5800-5806 ◽  
Author(s):  
Yaling Xiong ◽  
Wenying Ye ◽  
Wenlong Chen ◽  
Yiwen Wu ◽  
Qingfeng Xu ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Catalytic Properties ◽  
Highly Active

PdCu alloy nanodendrites were prepared and exhibited enhanced catalytic properties towards methanol oxidation relative to commercial Pd/C.

Hydrothermal Fabrication and Catalytic Properties of La1-xSrxM1-yFeyO3(M = Mn, Co) That Are Highly Active for the Removal of Toluene

2010 ◽  
Vol 44 (7) ◽  
pp. 2618-2623 ◽  
Author(s):  
Jiguang Deng ◽  
Hongxing Dai ◽  
Haiyan Jiang ◽  
Lei Zhang ◽  
Guozhi Wang ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Highly Active

Chemistry and catalytic properties of ruthenium and osmium complexes. 3. Development of highly active systems for the homogeneous hydrogenation of aldehydes and ketones

1986 ◽  
Vol 25 (8) ◽  
pp. 1106-1111 ◽  
Author(s):  
Roberto A. Sanchez-Delgado ◽  
Norma Valencia ◽  
Rosalinda Marquez-Silva ◽  
Antida Andriollo ◽  
Miriam Medina
Keyword(s):  
Catalytic Properties ◽  
Homogeneous Hydrogenation ◽  
Active Systems ◽  
Highly Active ◽  
Aldehydes And Ketones ◽  
Osmium Complexes

scholarly journals Bi- and trinuclear copper(I) complexes of 1,2,3-triazole-tethered NHC ligands: synthesis, structure, and catalytic properties

2016 ◽  
Vol 12 ◽  
pp. 863-873 ◽  
Author(s):  
Shaojin Gu ◽  
Jiehao Du ◽  
Jingjing Huang ◽  
Huan Xia ◽  
Ling Yang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Copper Complexes ◽  
Catalytic Properties ◽  
Polynuclear Complexes ◽  
Carbene Ligands ◽  
Efficient Catalyst ◽  
X Ray ◽  
X Ray Crystallography ◽  
Air Atmosphere ◽  
Highly Active

A series of copper complexes (3–6) stabilized by 1,2,3-triazole-tethered N-heterocyclic carbene ligands have been prepared via simple reaction of imidazolium salts with copper powder in good yields. The structures of bi- and trinuclear copper complexes were fully characterized by NMR, elemental analysis (EA), and X-ray crystallography. In particular, [Cu2(L2)2](PF6)2 (3) and [Cu2(L3)2](PF6)2 (4) were dinuclear copper complexes. Complexes [Cu3(L4)2](PF6)3 (5) and [Cu3(L5)2](PF6)3 (6) consist of a triangular Cu3 core. These structures vary depending on the imidazolium backbone and N substituents. The copper–NHC complexes tested are highly active for the Cu-catalyzed azide–alkyne cycloaddition (CuAAC) reaction in an air atmosphere at room temperature in a CH3CN solution. Complex 4 is the most efficient catalyst among these polynuclear complexes in an air atmosphere at room temperature.

Gastric peroxidase — localization, catalytic properties and possible role in extrathyroidal thyroid hormone formation

1981 ◽  
Vol 96 (2) ◽  
pp. 208-214 ◽  
Author(s):  
Ranajit K. Banerjee ◽  
Asoke G. Datta
Keyword(s):  
Thyroid Hormone ◽  
Mitochondrial Membrane ◽  
Catalytic Properties ◽  
Proteolytic Enzymes ◽  
Antithyroid Drugs ◽  
Highly Active ◽  
Hormone Formation ◽  
Gastric Peroxidase

Abstract. A highly active peroxidase (EC 1.11.1.7) has been found to be localized in the mitochondria isolated from the fundic region of mouse stomach. The stomach has also the property of concentrating iodide significantly. Evidence has been presented to show that the peroxidase is orientated outside the mitochondrial membrane. The enzyme is strongly inhibited by antithyroid drugs like methimazole and thiouracil. Azide and cyanide completely inactivate the enzyme. The activity is inhibited by SH-blocking reagents like mersalyl or pchloromercuribenzene sulphonate, but not by N-ethylmaleimide. The enzyme is also sensitive to the action of some proteolytic enzymes. It can catalyse the formation of mono- or diiodotyrosine from tyrosine or monoiodotyrosine as substrate, respectively. The enzyme is capable of synthesizing thyroxine and triiodothyronine on the backbone of a protein, such as thyroglobulin or albumin.

scholarly journals Tunable synthetic approaches for the optimization of nanostructured fuel cell catalysts: An overview

2004 ◽  
Vol 58 (6) ◽  
pp. 271-279 ◽  
Author(s):  
H. Bönnemann ◽  
K.S. Nagabhushana
Keyword(s):  
Particle Size ◽  
Fuel Cell ◽  
Catalytic Properties ◽  
Metal Catalysts ◽  
Highly Active ◽  
Fuel Cell Catalysts ◽  
Metal Composition ◽  
Synthetic Methodologies ◽  
Synthetic Approaches ◽  
Nanostructured Metal

Highly active nanostructured pluri-metal catalysts for fuel cell applications can be obtained by designing synthetic protocol where the particle size, metal composition and morphology can be readily tailored. Tunable synthesis relates to combining the various synthetic methodologies available for generating nanostructured metal catalysts with desired catalytic properties. Herein, we discuss some of these synthetic methodologies which were developed to combine the advantages of each pathway in generating efficient fuel cell catalysts and to learn how the composition and morphology of the metals be fine tuned.

scholarly journals A class-A β-lactamase from Pseudomonas stutzeri that is highly active against monobactams and cefotaxime

1993 ◽  
Vol 292 (3) ◽  
pp. 697-700 ◽  
Author(s):  
N Franceschini ◽  
M Galleni ◽  
J M Frère ◽  
A Oratore ◽  
G Amicosante
Keyword(s):  
Catalytic Properties ◽  
Pseudomonas Stutzeri ◽  
Third Generation ◽  
Beta Lactamase ◽  
Beta Lactamases ◽  
Class A ◽  
Highly Active

A beta-lactamase produced by Pseudomonas stutzeri was purified to protein homogeneity, and its physicochemical and catalytic properties were determined. Its profile was unusual since, in addition to penicillins, the enzyme hydrolysed second- and third-generation ‘beta-lactamase-stable’ cephalosporins and monobactams with similar efficiencies. On the basis of the characteristics of the interaction with beta-iodopenicillanic acid, the enzyme could be classified as a class-A beta-lactamase. However, when compared with most class-A beta-lactamases, it exhibited significantly lower kcat./Km values for the compounds usually considered to be the best substrates of these enzymes.

A Ni(ii)-MOF: reversible guest adsorption and heterogeneous catalytic properties for silylcyanation of aromatic aldehydes

2015 ◽  
Vol 51 (5) ◽  
pp. 839-842 ◽  
Author(s):  
Xiao-Meng Zhang ◽  
Chao-Wei Zhao ◽  
Jian-Ping Ma ◽  
Yang Yu ◽  
Qi-Kui Liu ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Catalytic Properties ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Heterogeneous Catalytic ◽  
Mild Conditions ◽  
Highly Active

A I2⊂Ni(ii)-MOF can be used as a highly active heterogeneous catalyst to promote solvent-free silylcyanation of aromatic aldehydes under mild conditions.

Synthesis and Characterization of Highly Dispersed Au-Pd Alloy Nanoparticles Supported on ZrO2

2013 ◽  
Vol 716 ◽  
pp. 89-93 ◽  
Author(s):  
Wen Jing Cui ◽  
Wu Lan Ao ◽  
Yu Lin Zhang ◽  
Zhao Ri Ge Tu Bao
Keyword(s):  
Reduction Method ◽  
Preparation Method ◽  
Catalytic Properties ◽  
Alloy Nanoparticles ◽  
Highly Active ◽  
Highly Dispersed ◽  
Pd Alloy ◽  
Protection Agent ◽  
Alloy Catalyst

This paper investigated Au-Pd/ZrO2alloy catalyst prepared by solution reduction method using NaBH4as reducing agent and L-lysine as protection agent. TEM, EDX, XRD, UV-Vis and XPS were employed to investigate the morphology, composition, dispersity and catalytic properties of the catalyst. The results show that Au-Pd/ZrO2alloy catalyst is uniform and highly dispersed. Furthermore, this preparation method leads to highly active Au-Pd/ZrO2alloy catalyst for the selective oxidation of benzyl alcohol.

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