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Title: Dry Reforming of Ethane and Butane with CO2 over PtNi/CeO2 Bimetallic Catalysts

Journal Article · · ACS Catalysis
 [1];  [2];  [2];  [3];  [4];  [4];  [4];  [2];  [2];  [5]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Dept. of Chemistry; Tsinghua Univ., Beijing (China). Dept. of Chemical Engineering
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Dept. of Chemistry
  3. Tsinghua Univ., Beijing (China). College of Materials Science and Engineering
  4. Columbia Univ., New York, NY (United States). Dept. of Chemical Engineering
  5. Brookhaven National Lab. (BNL), Upton, NY (United States). Dept. of Chemistry; Columbia Univ., New York, NY (United States). Dept. of Chemical Engineering

Dry reforming is a potential process to convert CO2 and light alkanes into syngas (H2 and CO), which can be subsequently transformed to chemicals and fuels. Here in this work, PtNi bimetallic catalysts have been investigated for dry reforming of ethane and butane using both model surfaces and supported powder catalysts. The PtNi bimetallic catalyst shows an improvement in both activity and stability as compared to the corresponding monometallic catalysts. The formation of PtNi alloy and the partial reduction of Ce4+ to Ce3+ under reaction conditions are demonstrated by in-situ Ambient Pressure X-ray Photoemission Spectroscopy (AP-XPS), X-ray Diffraction (XRD) and X-ray Absorption Fine Structure (XAFS) measurements. A Pt-rich bimetallic surface is revealed by Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) following CO adsorption. Combined in-situ experimental results and Density Functional Theory (DFT) calculations suggest that the Pt-rich PtNi bimetallic surface structure would weaken the binding of surface oxygenates/carbon species and reduce the activation energy for C-C bond scission, leading to an enhanced dry reforming activity.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704; AC02-98CH10886; FG02-05ER15688; AC02-05CH11231
OSTI ID:
1342631
Report Number(s):
BNL-113425-2017-JA; R&D Project: CO035; KC0302010; TRN: US1701623
Journal Information:
ACS Catalysis, Vol. 6, Issue 11; ISSN 2155-5435
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 84 works
Citation information provided by
Web of Science

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Confined PtNi catalysts for enhanced catalytic performances in one-pot cellobiose conversion to hexitols: a combined experimental and DFT study journal January 2019
Effect of Oxide Support on Catalytic Performance of FeNi‐based Catalysts for CO 2 ‐assisted Oxidative Dehydrogenation of Ethane journal November 2019
The effects of bimetallic interactions for CO 2 ‐assisted oxidative dehydrogenation and dry reforming of propane journal June 2019
Ceria–zirconia mixed oxides: Synthetic methods and applications journal January 2018
Combining CO2 reduction with propane oxidative dehydrogenation over bimetallic catalysts journal April 2018
Active sites for tandem reactions of CO 2 reduction and ethane dehydrogenation journal July 2018
Net reduction of CO2 via its thermocatalytic and electrocatalytic transformation reactions in standard and hybrid processes journal April 2019
Ambient Pressure Photoelectron Spectroscopy: Opportunities in Catalysis from Solids to Liquids and Introducing Time Resolution journal January 2018
Dry Reforming of Shale Gas and Carbon Dioxide with Ni-Ce-Al 2 O 3 Catalyst: Syngas Production Enhanced over Ni-CeO x Formation journal September 2018