Abstract: A process for the recovery of organic chemical feedstocks from biooil is presented. The process comprises separating the water soluble chemicals from biomass and recovering the primarily oxygenate compounds for use as feedstocks.
Abstract: The present invention is to provide a method by which, in carrying out a liquid-phase oxidation reaction using a catalyst comprising a tungsten species as an essential component, the catalytic activity performance can be improved or maintained and by which the catalyst component tungsten species can be prevented from being leached into liquid reaction mixtures to thereby control decrease in catalytic activity and make it possible to reuse the catalyst. A method of liquid-phase oxidation reaction using a tungsten species, wherein that, in carrying out said method of liquid-phase oxidation reaction using a catalyst comprising a tungsten species as an essential component, said tungsten species is caused to be supported on a porous support and, further, a third element other than the component elements of said porous support and the tungsten element is caused to coexist in said catalyst.
Type:
Grant
Filed:
July 18, 2003
Date of Patent:
September 16, 2008
Assignee:
Nippon Shokubai Co., Ltd.
Inventors:
Koji Yonehara, Yasutaka Sumida, Kazuhisa Hirata
Abstract: The present invention relates to a method for preparing hexafluoropropylene oxide with high yield, and particularly to a method for preparing hexafluoropropylene oxide comprising the step of performing a two-phase interfacial reaction between an organic phase containing hexafluoropropylene and an aqueous phase containing a hypochlorite oxidant in the presence of a phase-transfer catalyst and a non-ionic surfactant to improve the degree of emulsification and dispersion of the organic phase and to increase the contact interfacial area, thereby increasing the efficiency and the yield of the reaction.
Type:
Application
Filed:
February 5, 2007
Publication date:
April 17, 2008
Inventors:
Soo Bok Lee, In Jun Park, Dong-Kwon Kim, Jeong-Hoon Kim, Jong-Wook Ha, Bong-Jun Chang, Kwang-won Lee, Kwang-Han Kim, Jaewon Kim
Abstract: &Dgr;5-7-oxo-steroids are efficiently prepared from &Dgr;5-steroids using t-BuOOH in the presence of a copper catalyst, such as cuprous and cupric salts and copper metal.
Type:
Grant
Filed:
July 28, 1997
Date of Patent:
June 26, 2001
Inventors:
Jorge António Riberiro Salvador, Maria Luísa Campeão Fernandes Vaz de Sá e Melo, André de Silva Campos Neves