Abstract:
:Glycerol conversion was conducted in hot-compressed water (HCW: 573-673 K, 25-34.5 MPa) using a batch and a flow apparatus and the influences of temperature, H(2)SO(4), glycerol concentration, and pressure, were examined. The yield of acrolein was enhanced by higher glycerol and H(2)SO(4) concentration, and higher pressure. Approximately 80% selectivity of acrolein was obtained at 90% of glycerol conversion with an acid catalyst in supercritical condition (673 K and 34.5 MPa). The rate constant of acrolein decomposition was always higher than that of acrolein formation in the absence of acid catalyst but the rate constant of acrolein formation could be overcome that of acrolein decomposition by addition acid in supercritical condition.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Watanabe M,Iida T,Aizawa Y,Aida TM,Inomata Hdoi
10.1016/j.biortech.2006.05.007subject
Has Abstractpub_date
2007-04-01 00:00:00pages
1285-90issue
6eissn
0960-8524issn
1873-2976pii
S0960-8524(06)00201-Xjournal_volume
98pub_type
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