Petrobras | Date: 2013-03-04
A process is disclosed for conversion of cellulose in an Ionic Liquid medium. The process is characterized in that a cellulose-containing feedstock and an Ionic Liquid are mixed at a temperature below 80 C. The mixture is heated to a conversion temperature in the range of 80 C. to 220 C. under a hydrogen atmosphere. The presence of hydrogen during the heating step significantly reduces the formation of degradation products.
Bioecon International Holding N.V. and Petrobras | Date: 2014-08-22
A process for converting cellulose to glucose, said process comprising the steps of: providing a hydrated molten salt; contacting the hydrated molten salt with a cellulose-containing material to form dissolved glucose; removing the dissolved glucose from the hydrated molten salt.
Petrobras | Date: 2013-10-18
Method for transesterification of fatty acid esters. The method includes contacting (i) a catalyst comprising at least one of barium oxide and apatite with (ii) a reaction medium comprising at least one of vegetable oil and fats.
Process For Obtaining Nanocomposites, Nanocomposite, Method Of Capture And Retrieval Of A Solubilized And/Or Disperesed Material In Organic Or Inorganic Medium, Method Of Purification Of An Organic Or Inorganic Medium And Capture And Retrieval Kit For A Solubilized And/Or Dispersed Material In Organic Or Inorganic Medium
University of Sao Paulo and Petrobras | Date: 2015-06-11
The present invention lies in the fields of chemistry and nanotechnology and describes a nanocomposite to be used in the recovery of several compounds from inorganic or organic medium. Specifically, the invention presents a nanocomposite consisting of magnetic nanoparticles composed of Fe
Petrobras | Date: 2014-05-16
The present invention relates to a catalyst for steam pre-reforming of hydrocarbons, containing in its formulation nickel and rare earths supported on alumina or magnesium or calcium aluminates, so as to increase the resistance to coke deposition, and the process for preparing said catalyst. Additionally the present invention relates to a process for manufacturing hydrogen or syn gas through steam pre-reforming olefin-containing hydrocarbons in the presence of the catalyst obtained according to the present invention.