Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Patent
1998-09-02
2000-07-18
Wood, Elizabeth D.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
502150, 502151, 502172, B01J 3100
Patent
active
06090741&
ABSTRACT:
The present invention relates to a novel catalyst combination and a novel ocess for the synthesis of methanol and methyl formate (MF), and more specifically to the production of methanol and MF by contacting syngas under relatively mild conditions in a slurry phase with the novel catalyst combination comprising unreduced copper chromite prepared using specifical method, alkali alcoholates, a nonionics and a non-polar solvent. The nonionics, for example, C.sub.8 H.sub.17 --(C.sub.6 H.sub.4)--O--(C.sub.2 H.sub.4 O).sub.n H (where n is between 4 and 60) is used in the amount that is at least 5 vol. % of the slurry (liquid reaction medium). And the non-polar solvent having a dielectricity constant between 2 and 3 at 20.degree. C. is used in the amount that is at least 50 vol. % of the slurry. The present invention allows the synthesis of methanol and MF to occur in the temperature range of approximately 100-150.degree. C., and the pressure range of 3-8 MPa. The process produces methanol and MF with up to 95% syngas conversion per pass and up to 99% selectivity to methanol and MF. Very small amount of water, carbon dioxide and dimethyl ether is also produced. A space-time-yield of 88.3 gms./L/h is achieved when using a continuous stirring tank reactor(CSTR). A tubular slurry reactor of 10 liter volume without any mechanical agitator has been successfully used. The present catalyst combination also is capable of tolerating fluctuations in the H.sub.2 /CO ratio without major deleterious effect on the reaction rate. Furthermore, carbon dioxide and water are also tolerated without substantial catalyst deactivation.
REFERENCES:
patent: 4731386 (1988-03-01), Onsager
patent: 5221652 (1993-06-01), Tierney et al.
patent: 5384335 (1995-01-01), Tierney et al.
patent: 5385949 (1995-01-01), Tierney et al.
Chen Wenkai
Jia Chaoxia
Li Shunfen
Liu Xingquan
Luo Shizhong
Chengdu Institute of Organic Chemisty, Chinese Academy of Scienc
Wood Elizabeth D.
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