In:
ChemistrySelect, Wiley, Vol. 2, No. 1 ( 2017-01-10), p. 527-532
Abstract:
Bimodal (ZrO 2 ‐SiO 2 ‐B) support was successfully fabricated by self‐assembly of nanosized ZrO 2 inside pores of a commercial silica gel Q‐30. For comparison, a unimodal (ZrO 2 ‐SiO 2 ‐U) support was prepared by impregnation of Q‐30 with zirconium nitrate. Ni supported bimodal and unimodal ZrO 2 ‐SiO 2 , and pristine SiO 2 (Q‐30 and Q‐3) catalysts were comparatively studied in steam reforming of vegetable oil to hydrogen. The support and catalyst were analyzed by various techniques, such as N 2 physisorption, XRD, TPR, H 2 chemisorption and TGA. Characterization results indicated that bimodal support showing increased BET surface area was beneficial for the dispersion of Ni species. TPR result showed that the incorporation of ZrO 2 improved the reducibility of NiO and enhanced the metal‐support interaction, simultaneously. Among all catalyst studied bimodal Ni/ZrO 2 ‐SiO 2 ‐B catalyst exhibited highest oil conversion and H 2 formation rate with good stability due to the improved Ni dispersion, enhanced Ni‐support interaction, as well as facilitated diffusion of reactant and products, benefiting from bimodal structure and promotional effect of ZrO 2 .
Type of Medium:
Online Resource
ISSN:
2365-6549
,
2365-6549
DOI:
10.1002/slct.201601395
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
2844262-3
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