Jianwei Zheng

ORCID: 0000-0001-5027-573X
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About
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Research Areas
  • Catalytic Processes in Materials Science
  • Catalysis for Biomass Conversion
  • Catalysts for Methane Reforming
  • Nanomaterials for catalytic reactions
  • Catalysis and Hydrodesulfurization Studies
  • Electrocatalysts for Energy Conversion
  • Asymmetric Hydrogenation and Catalysis
  • Mesoporous Materials and Catalysis
  • Advanced Photocatalysis Techniques
  • Supercapacitor Materials and Fabrication
  • Carbon dioxide utilization in catalysis
  • Zeolite Catalysis and Synthesis
  • Catalysis and Oxidation Reactions
  • CO2 Reduction Techniques and Catalysts
  • Advanced NMR Techniques and Applications
  • Chemical Synthesis and Characterization
  • Oxidative Organic Chemistry Reactions
  • Graphene research and applications
  • Adsorption and biosorption for pollutant removal
  • Flame retardant materials and properties
  • Ammonia Synthesis and Nitrogen Reduction
  • Nanoporous metals and alloys
  • Lignin and Wood Chemistry
  • Membrane Separation and Gas Transport
  • Ionic liquids properties and applications

Zhejiang University of Technology
2025

Xiamen University
2014-2024

Collaborative Innovation Center of Chemistry for Energy Materials
2015-2024

Hebei Agricultural University
2024

University of Oxford
2018-2023

Huazhong University of Science and Technology
2023

Tongji Hospital
2023

Northeastern University
2020-2022

Nanjing Tech University
2020

The Synergetic Innovation Center for Advanced Materials
2020

Several lanthanum oxide-modified Cu/SiO2 (La-Cu/SiO2) catalysts synthesized by urea-assisted gelation and postimpregnation were used for the vapor-phase chemoselective hydrogenation of dimethyl oxalate (DMO) into ethylene glycol (EG). The 1.0La-Cu/SiO2-u catalyst with 1.0 wt % La loading was found to have highest activity, whereas higher at 3.0 adversely affected deterioration catalytic activity. H2-TPR results revealed that strong interactions between promoters Cu species substantially...

10.1021/cs400574v article EN ACS Catalysis 2013-10-14

Bulk chemicals such as ethylene glycol (EG) can be industrially synthesized from either or syngas, but the latter undergoes a bottleneck reaction and requires high hydrogen pressures. We show that fullerene (exemplified by C60) act an electron buffer for copper-silica catalyst (Cu/SiO2). Hydrogenation of dimethyl oxalate over C60-Cu/SiO2 at ambient pressure temperatures 180° to 190°C had EG yield up 98 ± 1%. In kilogram-scale reaction, no deactivation was seen after 1000 hours. This mild...

10.1126/science.abm9257 article EN Science 2022-04-14

Transition metal doped chalcogenides are one of the most important classes catalysts that have been attracting increasing attention for petrochemical and energy related chemical transformations due to their unique physiochemical properties. For practical applications, achieving maximum atom utilization by homogeneous dispersion metals on surface is essential. Herein, we report a detailed study deposition method using thiourea coordinated transition complexes. This allows preparation library...

10.1021/jacs.1c01097 article EN Journal of the American Chemical Society 2021-05-21

Ultrathin (1–3 cationic-layers) (CuZn)1–xGax-CO3 layered double hydroxide (LDH) nanosheets were synthesized following the aqueous miscible organic solvent treatment (AMOST) method and applied as catalyst precursors for methanol production from CO2 hydrogenation. It is found that, upon reduction, treated LDH (AMO-LDH) samples above a critical Ga3+ composition give consistently significantly higher Cu surface areas dispersions than catalysts prepared conventional hydroxyl-carbonate phases....

10.1021/acscatal.8b00474 article EN ACS Catalysis 2018-04-06

Abstract Selective hydrogenation and hydrogenolysis of 5‐hydroxymethylfurfural were performed with carbon nanotube‐supported bimetallic NiFe (NiFe/CNT) catalysts. The combination Ni Fe in an appropriate atomic ratio Ni/Fe (2.0) significantly increased the selectivity to 2,5‐furandimethanol or 2,5‐dimethylfuran depending on reaction temperature. selectivities as high 96.1 % at 383 K 91.3 473 K, respectively. characterization results confirmed that particles sizes less than 7 nm formed...

10.1002/cctc.201500097 article EN ChemCatChem 2015-05-12

An ordered mesoporous carbon (CMK-3)-supported gold catalyst was prepared and used in the aerobic oxidation of glucose to gluconic acid under base-free conditions with molecular oxygen. XRD TEM results revealed that nanoparticles were uniformly dispersed on surface channels CMK-3. Catalytic tests showed conversion remarkably increased decreased selectivity when oxygen pressure reaction temperature increased. Glucose reached over 92% 85% 383 K temperature, 0.3 MPa pressure, 2 h time. Hydrogen...

10.1021/cs502093b article EN ACS Catalysis 2015-03-16

There has been an intense research effort to develop 2-H MoS2 based catalysts reduce or eliminate the use of Pt/C at higher metal loading for hydrogen evolution reaction (HER) in catalytic hydrolysis water, which enables capture renewable energy sources as fuel and chemical. However, study its uncommon polymorph, 1T-MoS2, particularly doping effect with transition (TM) is rather limited due instability this phase. Here, we report a simple ambient temperature modification method using...

10.1021/acscatal.9b01503 article EN ACS Catalysis 2019-07-11

We report a new Pd@Zn core–shell catalyst that offers significantly higher kinetic barrier to CO/H<sub>2</sub>O formation in CO<sub>2</sub> hydrogenation but facilitates CH<sub>3</sub>OH production at below 2 MPa with selectivity 70% as compared 10% over Cu catalysts.

10.1039/c6gc02366e article EN Green Chemistry 2016-10-27

There is increasing interest in capturing H2 generated from renewables with CO2 to produce methanol. However, renewable hydrogen production expensive and limited quantity compared . Excess the feedstock gas not favorable for hydrogenation methanol, causing low activity poor methanol selectivity. Now, a class of Rh-In catalysts optimal adsorption properties intermediates presented. The catalyst can effectively catalyze synthesis but inhibit reverse water-gas shift reaction under -deficient...

10.1002/anie.202000841 article EN Angewandte Chemie International Edition 2020-05-27

The performance of an SBA-15-supported Cu catalyst for hydrogenation dimethyl oxalate to ethylene glycol is markedly promoted with Au. A key genesis the high activity ascribed formation Cu–Au alloy nanoparticles which stabilize active species and retard their agglomeration during process.

10.1039/c2cy20154b article EN Catalysis Science & Technology 2012-01-01

Carbon nanotubes induce confinement of Ag nanoparticles which show superior catalytic performance for hydrogenation dimethyl oxalate.

10.1039/c5nr08651e article EN cc-by Nanoscale 2016-01-01

Despite substantial efforts in recent years to address the challenges of plastic waste management, chemical upcycling plastics remains significantly hindered due inefficiencies and instability catalysts. In this study, we conducted upgrading using PtSn-based hydrocracking catalysts promoted with cerium at different loadings under mild reaction conditions. Our results demonstrate a crucial role for enhancing performance PtSn catalysts, optimal observed loading approximately 0.5 wt %. Over 77...

10.1021/acscatal.3c03996 article EN cc-by ACS Catalysis 2023-11-27

Selective hydrogenation of dimethyl oxalate (DMO) derived from syngas to ethylene glycol (EG) over copper (Cu)-based catalysts is an important transformation modern chemical industry. Methanol, as a product or solvent, can dissociate on the Cu surfaces by forming adsorbed CO under H2 atmosphere at 473 K. A small amount accelerates redox processes, thus inhibiting catalytic activity with negative kinetic reaction order. The strong interaction between and blocks active sites disrupts synergy...

10.1021/acs.jpcc.5b03569 article EN The Journal of Physical Chemistry C 2015-06-01

Effective control of surface composition bimetallic catalysts is challenging yet important, as synergistic effects between two metals play vital roles in heterogeneous catalysis. This study involves methods loading control, thermal activation, and selective etching to modify the on Au–Ag/SBA-15 catalyst gains insight into nature promotional effect Ag modification over Au catalysts. The binary prepared following a stepwise metal-loading procedure found for first time be active benzyl alcohol...

10.1021/acscatal.6b01348 article EN ACS Catalysis 2016-08-29
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