CATALYST FOR THE SYNTHESIS OF METHYLMERCAPTAN

WIPO Patent Application WO/1999/014172

A2

The present invention relates to catalysts for the synthesis of methylmercaptan which is used in the production of methionine, agricultural chemicals and other chemical compounds. The purpose of this invention is to increase the catalyst activity while maintaining a high selectivity for the methylmercaptan. To this end, the catalyst of the present invention includes the following components: a potassium compound consisting of potassium aluminate KAlO¿2?; a tungsten compound consisting of tungsten amorphous oxide (YI) -WO¿3?; and an aluminium oxide which has a transport pore volume of at least 0.06 cm?3¿/g with a pore radius of between 70 and 100 nm and contains one element of the group comprising sodium, boron or a mixture thereof. The components of the catalyst are selected in the following amounts: from 7.0 to 12.1 wt.% of tungsten oxide (YI); from 6.0 to 10.0 wt.% of potassium aluminate; from 0.3 to 3.0 wt.% of boron and/or sodium oxide or a mixture thereof; the balance consisting of Al¿2?O¿3?.

MASHKINA ANNA VASILIEVNA (RU)
SAVOSTIN JURY ALEXEEVICH (RU)
KLADOVA NATALIYA VLADIMIROVNA (RU)

PCT/RU1998/000295

March 25, 1999

September 15, 1998

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BORESKOVA INST KATALIZA SIBIR (RU)
MASHKINA ANNA VASILIEVNA (RU)
SAVOSTIN JURY ALEXEEVICH (RU)
KLADOVA NATALIYA VLADIMIROVNA (RU)

B01J21/04; B01J23/00; B01J23/02; B01J23/04; B01J23/30; C07C319/08; C07C321/04; (IPC1-7): C07C/

SU1316127A1
EP0564706A1	1993-10-13
RU2056940C1	1996-03-27
FR2735773A1	1996-12-27

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