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Selective Hydrogenation of Acetylene to Ethylene over Bimetallic Catalysts

Journal Article · · Industrial and Engineering Chemistry Research
 [1];  [2];  [3];  [2]
  1. West Virginia Univ., Morgantown, WV (United States); West Virginia University
  2. West Virginia Univ., Morgantown, WV (United States)
  3. H Quest Vanguard, Inc., Pittsburgh, PA (United States)
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Ni/α-Al2O3 catalyst and a series of bimetallic catalysts including Pd–Ag, Ni–Pd, Ni–Zn, Ni–Ag, and Ni–Ga were synthesized, characterized, and tested in selective hydrogenation of acetylene to ethylene. The bimetallic catalyst Ni–Ga exhibited almost the same ethylene selectivity compared to Pd–Ag based catalyst. The effect of the Ni/Ga ratio on the catalytic activity and selectivity to ethylene in acetylene hydrogenation was evaluated. Characterization by transmission electron microscopy, X-ray diffraction, hydrogen temperature-programmed reduction, and X-ray photoelectron spectroscopy was carried out to identify active phases on Ni–Ga based catalysts, which was correlated with catalytic performance and the reaction mechanism occurring over the catalyst. Here, the presence of Ga in Ni–Ga lattice structure confined the movement of dissociated H* and reduced the adsorption binding energy of ethylene, which could prevent overhydrogenation of acetylene.

Research Organization:
RAPID Manufacturing Institute, New York, NY (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office
Grant/Contract Number:
EE0007888
OSTI ID:
1642377
Journal Information:
Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 45 Vol. 58; ISSN 0888-5885
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

Figures / Tables (8)

Figure 1(p. 24)figure Figure 1
Figure 2(p. 25)figure Figure 2
Figure 3(p. 25)figure Figure 3
Figure 4(p. 27)figure Figure 4
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Figure 8(p. 31)figure Figure 8

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Catalysts
Hydrocarbons
Hydrogenation
Physical and chemical processes
Selectivity