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Influence of support on Rh-Co bimetallic catalysts for ethylene hydroformylation

Journal Article · · Journal of Catalysis
 [1];  [2];  [3];  [4]
  1. Columbia Univ., New York, NY (United States)
  2. Brookhaven National Laboratory (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
  3. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  4. Columbia Univ., New York, NY (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)

Bimetallic Rh- and Co-based catalysts are promising materials for the heterogenous ethylene hydroformylation reaction. Here, in this study, the influence of a mesoporous silica (SBA-15) support on Rh and Co bimetallic interactions was investigated through a comparison with silica gel and alumina supports. The bimetallic catalyst supported on mesoporous silica (RhCo3/SBA-15) showed the best C3 oxygenate yield among the three bimetallic catalysts. In-situ vibrational studies suggested moderate binding of the gem-dicarbonyl and Rh(CO)(C2H4) intermediates due to this bimetallic interaction that led to improved hydroformylation performance. Kinetic studies revealed a lower hydroformylation barrier for the bimetallic compared to a Rh monometallic catalyst, and in-situ X-ray absorption spectroscopy investigations showed clear Rh-Co alloy formation on RhCo3/SBA-15. The bimetallic enhancement effect from the interaction with the mesoporous silica support shown here can be further optimized to design olefin hydroformylation catalysts.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB); USDOE Office of Science (SC), Office of Workforce Development for Teachers & Scientists (WDTS); National Science Foundation (NSF)
Grant/Contract Number:
SC0012704; SC0012653; SC0014664
OSTI ID:
2452785
Alternate ID(s):
OSTI ID: 2440082
Report Number(s):
BNL--226212-2024-JAAM
Journal Information:
Journal of Catalysis, Journal Name: Journal of Catalysis Vol. 438; ISSN 0021-9517
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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