The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 20, 2012
Filed:
Oct. 27, 2010
Jacques Sinoncelli, Coronel Suarez, AR;
Sergey V. Gurevich, San Mateo, CA (US);
Jacques Sinoncelli, Coronel Suarez, AR;
Sergey V. Gurevich, San Mateo, CA (US);
Entreprises Sinoncelli S.A.R.L., Geneva, CH;
Abstract
A porous solid acid catalyst having high concentration of acidic sites and a large surface area includes a porous silica support and a sulfonated carbon layer disposed within the pores of the silica support. The catalyst, in certain embodiments, has a concentration of —SOH groups of at least about 0.5 mmol/g and a predominant pore size of at least about 300 Å. The catalyst is used to catalyze a variety of acid-catalyzed reactions, including but not limited to alkylation, acylation, etherification, olefin hydration and alcohol dehydration, dimerization of olefin and bicyclic compounds, esterification and transesterification. For example, the catalyst can be used to catalyze esterification of free fatty acids (FFAs) and, in certain embodiments, to catalyze transesterification of triglycerides in fats and oils. The catalyst is prepared by impregnating a silica support with a phenol-containing material, processing the material to form a polymer, carbonizing the polymer to form a carbon layer within the silica support, and sulfonating the resulting carbon layer to form sulfonated carbon.