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Title: ZnO nanoparticle catalysts for use in biodiesel production and method of making

A method of forming a biodiesel product and a heterogeneous catalyst system used to form said product that has a high tolerance for the presence of water and free fatty acids (FFA) in the oil feedstock is disclosed. This catalyst system may simultaneously catalyze both the esterification of FAA and the transesterification of triglycerides present in the oil feedstock. The catalyst system is comprised of a mixture of zinc oxide and a second metal oxide. The zinc oxide includes a mixture of amorphous zinc oxide and zinc oxide nanocrystals, the zinc nanocrystals having a mean grain size between about 20 and 80 nanometers with at least one of the nanocrystals including a mesopore having a diameter of about 5 to 15 nanometers. Preferably, the second metal oxide is a lanthanum oxide, the lanthanum oxide being selected as one from the group of La.sub.2CO.sub.5, LaOOH, and combinations or mixtures thereof.
Authors:
; ;
Publication Date:
OSTI Identifier:
1164365
Report Number(s):
8,895,764
12/485,433
DOE Contract Number:
FG36-05G085005
Resource Type:
Patent
Resource Relation:
Patent File Date: 2009 Jun 16
Research Org:
Wayne State University, Detroit, MI (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY