Hydrocarbon synthesis from CO and H.sub.2 using Rh supported on titanium oxides
US4116994A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Jul 28, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2523/89
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A new method for the selective synthesis of olefinic hydrocarbons of from C.sub.2 -C.sub.5 from CO and H.sub.2 which method comprises the steps of passing a synthesis gas stream of CO and H.sub.2 at a H.sub.2 /CO ratio of from 0.1-10 at a space velocity of from 100 hr..sup.-1 to 50,000 hr..sup.-1 over a catalyst system comprising from 0.01 to 10 wt. % rhodium deposited on TiO.sub.2, other titanium-containing oxides or mixtures of said titanium-containing oxides for a time sufficient to effect the generation of desired olefinic products, at a temperature of from 100.degree.-500.degree. C. and a pressure of from 100 to 10.sup.5 kPa. The supported rhodium catalyst has a surface area of from 10 to 60 m.sup.2 g.sup.-1 of total catalyst with a preferred rhodium crystallite size .ltoreq. 5 nm. Rhodium supported on TiO.sub.2, other titanium-containing oxides, or mixtures of titanium oxides results in a catalyst system which exhibits superior hydrocarbon synthesis characteristics. Such supported rhodium catalysts exhibit selectivity to olefinic products of from 2 to 5 carbons inclusive in processes for olefin generation accompanied by greater product yields and exhibit improved longevity, t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.