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Promoting effect of boron with high loading on Ni-based catalyst for hydrogenation of thiophene-containing ethylbenzene

Paper ID Volume ID Publish Year Pages File Format Full-Text
50669 46808 2012 4 PDF Available
Title
Promoting effect of boron with high loading on Ni-based catalyst for hydrogenation of thiophene-containing ethylbenzene
Abstract

Ni–B/SiO2 catalysts with boron loading in the range of 21%–41% were prepared by modified sol–gel method. The as-prepared catalysts not only possess relatively large pore and surface area, but exhibit high activity for ethylbenzene hydrogenation even in the presence of thiophene up to 640 ppm. Characterizations including XRD, TEM, H2-TPR, H2-TPD, NH3-TPD, H2-chemisoportion and XPS are carried out, and the results indicate that the high catalytic performance of Ni–B/SiO2 catalysts with appropriate boron loadings can be ascribed to the suitable acidity and reduction degree, higher dispersion and the appropriate ratio of Ni0/Ni2+ on the surface.

Graphical abstractThe nickel-based catalysts with B2O3/SiO2 ratio of 10%–21%, remarkably higher than previously reported, exhibit high activity and sulfur resistance for ethyl-benzene hydrogenation.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Ni–B/SiO2 catalysts with considerably high boron loading were prepared based on sol–gel method. ► The textural properties of Ni–B/SiO2 catalysts doping with high content of boron are still in good status. ► The introduction of boron can modify the quantities of reducible NiO particles and acidity of Ni–B/SiO2 catalysts. ► Higher dispersion and the appropriate ratio of Ni0/Ni2+ on the surface are favorable for sulfur-resistance of Ni–B/SiO2 catalyst.

Keywords
Ni-based catalyst; Boron; Aromatics hydrogenation; Sulfur resistance
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Promoting effect of boron with high loading on Ni-based catalyst for hydrogenation of thiophene-containing ethylbenzene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 21, 5 May 2012, Pages 18–21
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us