Abstract: The present invention is concerned with the use of hydrotreated synthetic Fischer-Tropsch waxes in polyolefin-based hot melt adhesive compositions, wherein the hydrotreated synthetic Fischer-Tropsch waxes modify the color degradation in the polyolefin-based hot melt adhesive compositions and are characterized by a polydispersity between 1.02 and 1.06.
Abstract: The present invention relates to catalysts, more particularly to a cobalt-containing catalyst composition. The present invention further relates to a process for preparing a cobalt-containing catalyst precursor, a process for preparing a cobalt-containing catalyst, and a hydrocarbon synthesis process wherein such a catalyst is used. According to a first aspect of the invention, there is provided a cobalt-containing catalyst composition comprising cobalt and/or a cobalt compound supported on and/or in a silica (SiO2) catalyst support wherein the average pore diameter of the catalyst support is more than 20 nm but less than 50 nm; the catalyst composition also including a titanium compound on and/or in the catalyst support, and a manganese compound on and/or in the catalyst support.
Type:
Grant
Filed:
June 22, 2017
Date of Patent:
March 22, 2022
Assignee:
Sasol South Africa Limited
Inventors:
Jan Mattheus Botha, Denzil James Moodley, Jana Heloise Potgieter, Hendrik Van Rensburg, Jan Van De Loosdrecht, Prabashini Moodley
Abstract: The invention provides a process for preparing a cobalt-containing catalyst precursor. The process includes calcining a loaded catalyst support comprising a silica (SiO2) catalyst support supporting cobalt nitrate to convert the cobalt nitrate into cobalt oxide. The calcination includes heating the loaded catalyst support at a high heating rate, which does not fall below 10° C./minute, during at least a temperature range A. The temperature range A is from the lowest temperature at which calcination of the loaded catalyst support begins to 165° C. Gas flow is effected over the loaded catalyst support during at least the temperature range A. The catalyst precursor is reduced to obtain a Fischer-Tropsch catalyst.
Type:
Application
Filed:
October 23, 2019
Publication date:
January 20, 2022
Applicant:
Sasol South Africa Limited
Inventors:
Jean Louis GAUCHÉ, Cornelia PIENAAR, Jurie Christiaan Wessels SWART, Jan Mattheus BOTHA, Denzil James MOODLEY, Jana Heloise POTGIETER, Jolandie Zonja DAVEL