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J Colloid Interface Sci. 2014 Mar 1;417:264-9. doi: 10.1016/j.jcis.2013.11.041. Epub 2013 Nov 22.

Effect of palygorskite clay on pyrolysis of rape straw: an in situ catalysis study.

Author information

  • 1School of Resource and Environmental Engineering, Hefei University of Technology, China; School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, Australia.
  • 2School of Resource and Environmental Engineering, Hefei University of Technology, China. Electronic address: chentianhu@hfut.edu.cn.
  • 3School of Resource and Environmental Engineering, Hefei University of Technology, China.
  • 4School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, Australia. Electronic address: r.frost@qut.edu.au.

Abstract

Biomass tar restricts the wide application and development of biomass gasification technology. In the present paper, palygorskite, a natural magnesium-containing clay mineral, was investigated for catalytic pyrolysis of rape straw in situ and compared with the dolomite researched widely. The two types of natural minerals were characterized with XRD and BET. The results showed that combustible gas derived from the pyrolysis increased with an increase in gasification temperature. The H(conversion) and C(conversion) increased to 44.7% and 31% for the addition of palygorskite and increased to 41.3% and 31.3% for the addition of dolomite at the gasification temperature of 800°C, compared with 15.1% and 5.6% without addition of the two types of material. It indicated that more biomass was converted into combustible gases implying the decrease in biomass tar under the function of palygorskite or dolomite and palygorskite had a slightly better efficiency than that of dolomite in the experimental conditions.

KEYWORDS:

Dolomite; In situ catalytic cracking; Palygorskite clay; Pyrolysis

PMID:
24407686
DOI:
10.1016/j.jcis.2013.11.041
[PubMed - indexed for MEDLINE]
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