Toyo Soda Manufacturing Co., Ltd.

Teruhisa Sakamoto

Shigeo Nakamura

Keiichi Kihara

Yukihiro Tsutsumi

Kazuhiko Sekizawa

Toshio Hironaka

Satoshi Ishida

Nobuyuki Taniguchi

Taketoshi Nagahama

Olefins are hydrated to the corresponding alcohols in the presence of at least one crystalline alumino-silicate selected from offretite, ferrierite and erionite. The offretite, ferrierite and erionite are preferably characterized by X-ray diffraction patterns shown in Tables 1 and 7; Tables 2, 8 and 9; and Table 3, respectively. At least a part of the exchangeable cations in the offretite, ferrierite and erionite may be exchanged with at least one cation selected from a hydrogen ion, an alkaline earth metal ion and a rare earth metal ion. Furthermore, at least a part of the exchangeable cations in the erionite may be exchanged with an ammonium ion and/or an alkali metal ion.

Process for preparation of alcohols by hydration of olefins

A process for producing methacrylic acid by the vapor phase catalytic oxidation of methacrolein with molecular oxygen or a molecular oxygen-containing gas comprises using a catalyst of multi-elemental complex oxide having the formula

Process for producing methacrylic acid

Methacrolein is produced by a vapor phase oxidation of isobutylene or tertiary butanol in the presence of a complex oxide catalyst having the formula

Process for producing methacrolein

Methacrylic acid is produced by the vapor phase oxidation of methacrolein in the presence of a complex oxide catalyst having the formula:

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Shinnanyo, Japan

Teruhisa Sakamoto