Patent ID: 8829221

Claim:
A method for producing monosilane and tetraalkoxysilane comprising subjecting alkoxysilane represented by formula (1) H n Si(OR) 4-n (1) wherein R represents alkyl group having 1 to 6 carbon atoms and n represents an integer of from 1 to 3, to dismutation reaction in a gaseous phase in the presence of a catalyst containing an alkali metal fluoride and a catalyst activator from the group consisting of the following (i) to (vi): (i) tetrakis(dialkylamino)phosphonium halide represented by formula (2) R 1 R 2 N) 4 P + X − (2) wherein R 1 and R 2 represent alkyl group having 1 to 3 carbon atoms independently from each other and X represents Br, Cl or F; (ii) 1,4-diazabicyclo[2.2.2] octane; (iii) hexaalkyl guanidinium halide represented by formula (3) [(R 3 R 4 N) 2 CNR 5 R 6 ]+X − (3) wherein R 3 , R 4 , R 5 and R 6 represent alkyl group having 1 to 3 carbon atoms independently from each other and X represents Br, Cl or F; (iv) tetraalkyl ammonium chloride represented by formula (4) R 7 R 8 R 9 R 10 N + Cl − (4) wherein R 7 , R 8 , R 9 and R 10 represent alkyl group having 1 to 4 carbon atoms independently from each other; (v) calcium fluoride; and (vi) oligo(ethylene glycol) dimethyl ether represented by formula (5) H 3 C—O—(CH 2 CH 2 O) m —CH 3 (5) wherein m is an integer of 2 to 8.