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You searched for: Journal name Journal of catalysis Remove constraint Journal name: Journal of catalysis Publication year rev 7980-2020 Remove constraint Publication year rev: 7980-2020
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1. A combined experimental and DFT study of H2O effect on In2O3/ZrO2 catalyst for CO2 hydrogenation to methanol

Author:
Xiao Jiang; Xiaowa Nie; Yutao Gong; Colton M. Moran; Jianyang Wang; Jie Zhu; Huibin Chang; Xinwen Guo; Krista S. Walton; Chunshan Song
Source:
Journal of catalysis 2020 v.383 pp. 283-296
ISSN:
0021-9517
Subject:
X-ray photoelectron spectroscopy; adsorption; carbon dioxide; catalysts; density functional theory; dissociation; energy-dispersive X-ray analysis; fuels; greenhouse gas emissions; hydrogen; hydrogenation; methanol; oxygen; renewable energy sources; zirconium; zirconium oxide
Abstract:
... CO₂ hydrogenation with renewable energy is one of the promising approaches to mitigate CO₂ emissions and produce sustainable chemicals and fuels. The effect of adding H₂O in the feed gas on the activity and selectivity of In₂O₃/ZrO₂ catalysts for CO₂ hydrogenation to methanol was studied using combined experimentatal and computational efforts. Notably, adding an appropriate amount of H₂O (0.1 mol% ...
DOI:
10.1016/j.jcat.2020.01.014

2. A concerted double-layer steric strategy enables an ultra-highly active nickel catalyst to access ultrahigh molecular weight polyethylenes

Author:
Jian Xia; Yixin Zhang; Shuqing Kou; Zhongbao Jian
Source:
Journal of catalysis 2020 v.390 pp. 30-36
ISSN:
0021-9517
Subject:
catalysts; catalytic activity; ethylene; molecular weight; nickel; olefin; polyethylene; polymerization
Abstract:
... Both catalytic activity and polymer molecular weight are two crucial parameters in olefin polymerization catalysis. Differed from the superior feature of early transition metal catalysts, late transition metal nickel catalysts are usually more challenging to approach both of them at an ultrahigh level. In this contribution, by use of a concerted double-layer steric strategy a new conceptual α-diim ...
DOI:
10.1016/j.jcat.2020.07.017

3. A multicomponent palladium-catalyzed carbonylative approach to imidazopyridinyl-N,N-dialkylacetamides

Author:
Lucia Veltri; Patrizio Russo; Tommaso Prestia; Paola Vitale; Roberto Romeo; Bartolo Gabriele
Source:
Journal of catalysis 2020 v.386 pp. 53-59
ISSN:
0021-9517
Subject:
acetonitrile; air; catalytic activity; central nervous system; chemical bonding; gamma-aminobutyric acid; heterocyclic compounds; isomerization; oxidants; oxygen; palladium; secondary amines; solvents
Abstract:
... A novel, multicomponent approach to 2-(imidazo[1,2-a]pyridin-3-yl)-N,N-dialkylacetamides (very important class of fused heterocyclic derivatives, known to act on central nervous system by enhancing the activity of the GABA) is reported. It is based on the carbonylation reaction of N-Boc-(prop-2-yn-1-yl)pyridin-2-amines carried out in the presence of secondary amines (2–3 equiv) under oxidative con ...
DOI:
10.1016/j.jcat.2020.03.026

4. A novel strategy for synthesizing Fe, N, and S tridoped graphene-supported Pt nanodendrites toward highly efficient methanol oxidation

Author:
Jing-Ping Zhong; Cheng Hou; Li Li; Muhammad Waqas; You-Jun Fan; Xing-Can Shen; Wei Chen; Li-Yang Wan; Hong-Gang Liao; Shi-Gang Sun
Source:
Journal of catalysis 2020 v.381 pp. 275-284
ISSN:
0021-9517
Subject:
carbon monoxide; catalysts; catalytic activity; density functional theory; durability; electrochemistry; fuel cells; graphene; iron; methanol; nanohybrids; nanoparticles; oxidation; platinum; pyrolysis; sulfonates
Abstract:
... Multiatom-doped carbon nanomaterials have emerged as very promising electrocatalysts for fuel cell applications because of the synergistic electron effect that occurs between the hetero-dopants. However, their electrochemical properties strongly depend on the structural design of the doped heteroatoms, and a fundamental understanding of their electrocatalytic mechanism is still a challenge. Herein ...
DOI:
10.1016/j.jcat.2019.11.002

5. A review of the current trends in high-temperature electrocatalytic ammonia production using solid electrolytes

Author:
Seval Gunduz; Dhruba J. Deka; Umit S. Ozkan
Source:
Journal of catalysis 2020 v.387 pp. 207-216
ISSN:
0021-9517
Subject:
ammonia; catalytic activity; electrochemistry; electrolytes; electrosynthesis; energy
Abstract:
... High-temperature solid-state electrochemical synthesis of ammonia is a promising route for clean, sustainable and on-demand small-scale production of ammonia with lower energy consumption compared to the conventional Haber-Bosch process. Despite of its significant potential, there are still many aspects of this process that remain unexplored. In this mini-review article, the literature on high-tem ...
DOI:
10.1016/j.jcat.2020.04.025

6. A robust phenazine-containing organic polymer as catalyst for amine oxidative coupling reactions

Author:
Junyu Lin; Zhiyong Guo; Hongbing Zhan
Source:
Journal of catalysis 2020 v.385 pp. 338-344
ISSN:
0021-9517
Subject:
amines; catalysts; catalytic activity; cations; electron paramagnetic resonance spectroscopy; electron transfer; polymers; porous media; surface area; thermal stability; ultraviolet-visible spectroscopy
Abstract:
... Here we present the design and synthesis of a new robust microporous organic polymer (TPBP) decorated with phenazine groups which endowed reversibly redox-active properties. The obtained TPBP possesses relatively high surface area (359 m²/g) and good thermal stability. TPBP exhibits excellent catalytic capability for the oxidative homocoupling of amines with high activity and selectivity toward ta ...
DOI:
10.1016/j.jcat.2020.03.031

7. A ruthenium and palladium bimetallic system superior to a rhodium co-catalyst for TiO2-photocatalyzed ring hydrogenation of aniline to cyclohexylamine

Author:
Sakae Araki; Kousuke Nakanishi; Atsuhiro Tanaka; Hiroshi Kominami
Source:
Journal of catalysis 2020 v.389 pp. 212-217
ISSN:
0021-9517
Subject:
X-ray photoelectron spectroscopy; active sites; adsorption; ambient temperature; ammonia; aniline; chemical industry; green chemistry; hydrogen; hydrogenation; oxalic acid; palladium; photocatalysts; raw materials; rhodium; ruthenium; titanium; titanium dioxide; transmission electron microscopy
Abstract:
... Cyclohexylamine (CHA) is used as an important raw material in chemical industries. Since the production of CHA requires a high temperature and excess amounts of hydrogen gas (H₂) and ammonia, the development of a simple reaction operated under milder conditions using a safe compound is indispensable for achieving sustainable chemistry. A highly selective ring hydrogenation of aniline (AN) to CHA o ...
DOI:
10.1016/j.jcat.2020.05.035

8. A theoretical study on CO2 electrolysis through synergistic manipulation of Ni/Mn doping and oxygen vacancies in La(Sr)FeO3

Author:
Bohua Ren; Eric Croiset; Luis Ricardez–Sandoval
Source:
Journal of catalysis 2020 v.383 pp. 273-282
ISSN:
0021-9517
Subject:
active sites; adsorption; carbon dioxide; catalysts; catalytic activity; cations; density functional theory; electrochemistry; electrolysis; iron; manganese; models; nickel; oxygen; physical phases; reaction mechanisms; strontium
Abstract:
... To improve the catalytic activity of La(Sr)FeO₃ based perovskites (LSF) for CO₂ reduction in solid oxide electrolysis cell (SOEC), CO₂ adsorption and reduction reaction mechanism were investigated on 12 surface models describing the effects of surface oxygen vacancies and Ni/Mn doping (25% and 50% surface cation doping ratios). In particular, a phase diagram was established to find the most stable ...
DOI:
10.1016/j.jcat.2020.01.033

9. ATMP derived cobalt-metaphosphate complex as highly active catalyst for oxygen reduction reaction

Author:
Lian-Hua Xu; Sheng-Li Zhang; Shi-Ying Guo; Xue-Ji Zhang; Serge Cosnier; Robert S. Marks; Wen-Ju Wang; Hai-Bo Zeng; Dan Shan
Source:
Journal of catalysis 2020 v.387 pp. 129-137
ISSN:
0021-9517
Subject:
air; carbonization; catalysts; catalytic activity; chelating agents; cobalt; coordination polymers; electrochemistry; energy conservation; methanol; nanocomposites; nitrogen; phosphorous acid; physical properties; platinum; spectroscopy; synthesis
Abstract:
... Rational design and facile synthesis of highly active electrocatalysts with low cost for oxygen reduction reaction (ORR) are always of great challenge. Specifically, development of a new type of energy-saving materials with convenient method is regarded as the current bottleneck. Herein, an innovative strategy based on amino trimethylene phosphonic acid (ATMP) as chelating agent for cobalt-metapho ...
DOI:
10.1016/j.jcat.2020.04.014

10. Acceptorless dehydrogenation of amines and alcohols using simple ruthenium chloride

Author:
Muthukumar Kannan; Parul Barteja; Preeti Devi; Senthilkumar Muthaiah
Source:
Journal of catalysis 2020 v.386 pp. 1-11
ISSN:
0021-9517
Subject:
alcohols; byproducts; catalysts; chlorides; dehydrogenation; hydrides; hydrogen; imines; liquids; oxidation; reducing agents; ruthenium; secondary amines
Abstract:
... A highly efficient, economic and environmental friendly catalyst system has been developed for the dehydrogenation of alcohols and amines using simple RuCl₃·nH₂O and N-benzylhexamethylenetetramine. The in situ catalyst system efficiently oxidized the primary and secondary amines and secondary alcohols into nitrile, imine and ketone products, respectively in moderate to excellent yields. The develo ...
DOI:
10.1016/j.jcat.2020.03.025

11. Acceptorless dehydrogenation of amines to nitriles catalyzed by N-heterocyclic carbene-nitrogen-phosphine chelated bimetallic ruthenium (II) complex

Author:
Xufeng Nie; Yanling Zheng; Li Ji; Haiyan Fu; Hua Chen; Ruixiang Li
Source:
Journal of catalysis 2020 v.391 pp. 378-385
ISSN:
0021-9517
Subject:
amines; catalytic activity; dehydrogenation; heterocyclic nitrogen compounds; ligands; moieties; nitriles; reaction mechanisms; ruthenium; synergism
Abstract:
... We have developed a clean, atom-economical and environmentally friendly route for acceptorless dehydrogenation of amines to nitriles by combining a new dual N-heterocyclic carbene-nitrogen-phosphine ligand R(CNP)₂ (R = o-xylyl) with a ruthenium precursor [RuCl₂(η⁶-C₆H₆)]₂. In this system, the electronic and steric factors of amines had a negligible influence on the reaction and a broad range of fu ...
DOI:
10.1016/j.jcat.2020.09.005

12. Acidity modification of ZSM-5 for enhanced production of light olefins from CO2

Author:
Abhay Dokania; Abhishek Dutta Chowdhury; Adrian Ramirez; Selvedin Telalovic; Edy Abou-Hamad; Lieven Gevers; Javier Ruiz-Martinez; Jorge Gascon
Source:
Journal of catalysis 2020 v.381 pp. 347-354
ISSN:
0021-9517
Subject:
Bronsted acids; acetates; acidity; alkenes; calcium; carbon dioxide; catalysts; catalytic activity; nuclear magnetic resonance spectroscopy; oligomerization; zeolites
Abstract:
... Utilization of multi-functional catalysis is fast becoming the method of choice to boost the production of valuable chemicals from CO₂. Here, we present a possible route to increase selectivity to light olefins by modifying the acidity of the zeolitic component of a multi-functional catalyst. This is carried out via incorporation of Ca on the zeolite ZSM-5 by incipient wetness impregnation. This i ...
DOI:
10.1016/j.jcat.2019.11.015

13. AgNO3·SiO2: Convenient AgNPs source for the sustainable hydrofunctionalization of allenyl-indoles using heterogeneous catalysis

Author:
Amparo Luna; Fernando Herrera; Sheila Higuera; Alejandro Murillo; Israel Fernández; Pedro Almendros
Source:
Journal of catalysis 2020 v.389 pp. 432-439
ISSN:
0021-9517
Subject:
catalysts; catalytic activity; density functional theory; gold; nanosilver; silica gel; silver nitrate
Abstract:
... Supported silver nitrate in silica gel has been demonstrated as an excellent heterogeneous catalytic system for the selective hydroarylation of indole-tethered allenes, with a selectivity reversal in comparison with homogeneous gold catalysis. In this way, the controlled preparation of 1,2-disubstituted-9H-carbazoles, 1,2-disubstituted-4,9-dihydro-1H-carbazoles, and 2,4-disubstituted-spiro[cyclope ...
DOI:
10.1016/j.jcat.2020.06.002

14. All-solid-state Z-scheme photocatalysts of g-C3N4/Pt/macroporous-(TiO2@carbon) for selective boosting visible-light-driven conversion of CO2 to CH4

Author:
Chujun Wang; Xi Liu; Wenjie He; Yilong Zhao; Yuechang Wei; Jing Xiong; Jian Liu; Jianmei Li; Weiyu Song; Xiao Zhang; Zhen Zhao
Source:
Journal of catalysis 2020 v.389 pp. 440-449
ISSN:
0021-9517
Subject:
carbon dioxide; carbon nitride; crystal structure; electron transfer; electrons; energy; graphene; methane; nanoparticles; photocatalysts; photons; photoreduction; photosynthesis; porous media; titanium dioxide
Abstract:
... The artificial photosynthesis for visible-light-driven CO₂ reduction with H₂O is promising to solve both energy and environmental issues simultaneously. Herein, we have successfully fabricated all-solid-state Z-scheme ternary photocatalysts, consisting of two isolated photochemical systems of graphitic carbon nitride (g-C₃N₄) and three-dimensional ordered macroporous carbon-coated TiO₂ (3DOM-TiO₂@ ...
DOI:
10.1016/j.jcat.2020.06.026

15. Amorphous cobalt-cerium binary metal oxides as high performance electrocatalyst for oxygen evolution reaction

Author:
Lili Pan; Qingqing Wang; Yongdan Li; Cuijuan Zhang
Source:
Journal of catalysis 2020 v.384 pp. 14-21
ISSN:
0021-9517
Subject:
catalysts; cobalt; cobalt oxide; cost effectiveness; electrochemistry; geometry; glass; oxygen production; photochemistry; potassium hydroxide; surface area; synergism; tin dioxide
Abstract:
... The amorphous Co-Ce binary metal oxides Co₁₋yCeyOₓ prepared by the photochemical metal–organic deposition (PMOD) method is developed as high performance electrocatalysts for oxygen evolution reaction (OER). The influence of Ce content on the OER activity is investigated in terms of geometric and electronic factors. Ce can remarkably enhance the OER activity of CoOₓ due to the synergistic effect of ...
DOI:
10.1016/j.jcat.2020.02.005

16. An alloy chemistry strategy to tailoring the d-band center of Ni by Cu for efficient and selective catalytic hydrogenation of furfural

Author:
Feiying Tang; Liqiang Wang; Maru Dessie Walle; Abdulhadi Mustapha; You-Nian Liu
Source:
Journal of catalysis 2020 v.383 pp. 172-180
ISSN:
0021-9517
Subject:
adsorption; alcohols; alloys; catalysts; catalytic activity; copper; desorption; furfural; furfuryl alcohol; hydrogenation; nickel; thermodynamics
Abstract:
... Nickel is a promising catalyst for the hydrogenation of furfural (FA) into furfuryl alcohol (FOL) and tetrahydrofurfuryl alcohol (TFOL). However, slow H* desorption and low catalytic selectivity limit its practical application. Herein, we employed an alloying strategy to tailoring the d-band center of Ni by Cu for efficient and selective catalytic hydrogenation of furfural. A series of Ni-Cu alloy ...
DOI:
10.1016/j.jcat.2020.01.019

17. An analysis of electroless deposition derived Ni-Pt catalysts for the dry reforming of methane

Author:
Benjamin T. Egelske; Jayson M. Keels; John R. Monnier; John R. Regalbuto
Source:
Journal of catalysis 2020 v.381 pp. 374-384
ISSN:
0021-9517
Subject:
X-ray diffraction; alloys; aluminum oxide; catalysts; hydrogen; methane; nickel; oxidation; platinum; temperature; thermodynamics
Abstract:
... A series of nickel-platinum catalysts supported on gamma alumina (γ-Al2O3) with small, increasing amounts of Pt promoter were precisely prepared by electroless deposition at 5.0 wt% Ni and with compositions up to 2.8 wt% Pt (one theoretical monolayer of Pt on Ni) and evaluated for the dry reforming of methane. Characterization was performed using x-ray diffraction, temperature programmed reduction ...
DOI:
10.1016/j.jcat.2019.10.035

18. Assembly of Zr-based coordination polymer over USY zeolite as a highly efficient and robust acid catalyst for one-pot transformation of fructose into 2,5-bis(isopropoxymethyl)furan

Author:
Junnan Wei; Ting Wang; Huai Liu; Yiqiang Liu; Xing Tang; Yong Sun; Xianhai Zeng; Tingzhou Lei; Shijie Liu; Lu Lin
Source:
Journal of catalysis 2020 v.389 pp. 87-98
ISSN:
0021-9517
Subject:
Bronsted acids; Lewis acids; ambient temperature; biofuels; catalysts; catalytic activity; chemical bonding; coordination polymers; fructose; furans; isopropyl alcohol; zeolites; zirconium
Abstract:
... It is highly desirable but challenging to develop a one-pot process for the transformation of fructose into 2,5-bis(isopropoxymethyl)furan (BPMF), a promising biofuel component, because a cascade sequence involving dehydration, reduction, and etherification requires multifunctional acid catalysts. Herein, we propose a facile and firm assembly of Zr/2-methylimidazole (2-MeIM) coordination polymer o ...
DOI:
10.1016/j.jcat.2020.05.020

19. Atomic-level understanding on the evolution behavior of subnanometric Pt and Sn species during high-temperature treatments for generation of dense PtSn clusters in zeolites

Author:
Lichen Liu; Miguel Lopez-Haro; Christian W. Lopes; Debora M. Meira; Patricia Concepcion; Jose J. Calvino; Avelino Corma
Source:
Journal of catalysis 2020 v.391 pp. 11-24
ISSN:
0021-9517
Subject:
air; catalytic activity; dehydrogenation; temperature; zeolites
Abstract:
... To achieve high-loading of stable subnanometric metal clusters on solid carriers is a challenge since those small metal clusters have strong tendency to sinter into larger nanoparticles. Development of facile synthesis methodologies to obtain subnanometric metal catalysts with high metal loading and high stability against sintering at high temperature (>500 °C) in reductive atmosphere (such as H₂) ...
DOI:
10.1016/j.jcat.2020.07.035

20. Au(III) catalyzes the cross-coupling between activated methylenes and alkene derivatives

Author:
Marta Castiñeira Reis; Marta Marín-Luna; Nenad Janković; Olalla Nieto Faza; Carlos Silva López
Source:
Journal of catalysis 2020 v.392 pp. 159-164
ISSN:
0021-9517
Subject:
catalysts; catalytic activity; couplings; cross-coupling reactions; hardness
Abstract:
... In the last decade substantial efforts were devoted towards the exploitation of the Au(I) as a promising tool to promote CC bond formation reactions via the activation of unsaturations. Among these efforts, Au(I)/Au(III) cross couplings mediated by a co-oxidant or by photoactivation sit at a privileged position. Au(III) has also shown a rich chemistry but, due to its hardness and lower affinity fo ...
DOI:
10.1016/j.jcat.2020.09.030