Effects of Weak Surface Modification on Co/SiO2 Catalyst for Fischer-Tropsch Reaction.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 25938725.
- Also identified by DOI 10.1371/journal.pone.0124228 and PMC identifier 4418669.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
A weak surface modification is applied to Co/SiO2 catalyst by hydrothermal treatment at 180°C for 5 h. Aluminum is introduced to Co/SiO2 catalysts during the surface modification. The effects of surface modification on Co/SiO2 catalyst are studied by changing the operating sequences of surface modification and cobalt impregnation in the catalyst preparation. Surface modification before cobalt impregnation makes Co3O4 particle small and dispersed into the deep part of enlarged pore in SiO2, while surface modification after cobalt impregnation does not obviously change the particle size of Co3O4. The improved amplitude of catalytic activity is similar for the two kinds of catalysts, but they are benefited from different factors. The content of iso-hydrocarbons in the products is increased by the surface modifications.
Medical subject headings
- Chemical Phenomena
- Cobalt
- Silicon Dioxide