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Anti-Coke Properties of Acid-Treated Bentonite-Supported Nickel-Boron Catalyst
- Source :
- Chemical Engineering & Technology. 41:175-181
- Publication Year :
- 2017
- Publisher :
- Wiley, 2017.
-
Abstract
- Boron (B) was introduced into the Ni/acid treated bentonite (Ni/A-Bn) catalysts to improve the anti-coking ability of nickel-based catalyst in the hydrogenation of nitrobenzene. The results showed the optimal B amount was 0.75 wt% on the Ni/A-Bn, which was more active than the catalyst without B. During a 105-hour reaction, Ni-B/acid treated bentonite (Ni-B/A-Bn) obtained a high nitrobenzene conversion (>99%) and a high aniline selectivity. The lifetime of Ni-B/A-Bn with B amount of 0.75 wt% extended 45 h compared to the Ni/A-Bn. The addition of B into Ni/A-Bn decreased the NiO particle size, improved the dispersion of the active components, and decreased the carbon deposition. The combination of B and Ni prevented the coke on the metallic Ni in the nitrobenzene hydrogenation, reducing the carbon deposition on the surface of Ni-B/A-Bn.
- Subjects :
- General Chemical Engineering
Inorganic chemistry
Non-blocking I/O
chemistry.chemical_element
02 engineering and technology
General Chemistry
Coke
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Industrial and Manufacturing Engineering
0104 chemical sciences
Catalysis
Nitrobenzene
chemistry.chemical_compound
Nickel
Aniline
chemistry
Bentonite
0210 nano-technology
Boron
Subjects
Details
- ISSN :
- 09307516
- Volume :
- 41
- Database :
- OpenAIRE
- Journal :
- Chemical Engineering & Technology
- Accession number :
- edsair.doi...........88320826ca89ddb26c363efcc7e66d60