Title:
PRODUCTION OF SOLID CATALYST FOR ETHERIFICATION AND ETHERIFIED COMPOUND USING THE SAME
Document Type and Number:
Japanese Patent JP3293749
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject catalyst containing a rare earth element, enabling easy and efficient etherification in aqueous solvent without any specific catallyst separation-related process.
SOLUTION: This catalyst to be used in the etherification contains at least one kind of compound selected from the group consisting of (I) rare earth element hydroxide, etc., and (II) compound produced by substituting OF group of the hydroxide with phosphate group. The compound in the group is represented by the formula M(OH)x.(O)y' (PO4)z (M is a rare earth element; 0<(x≤3; 0≤(y)<1.5;0 ≤ (z)<1). The hydroxide is produced by heating an aqueous solution of a rare earth element salt to 20-80°C, adding NH3 or alkali, and precipitating the resulting hydroxide at ≥pH10, preferably, ≥pH12. The compound II is produced by mixing a rare earth element salt, orthophosphoric acid, etc., in aqueous solution at 20-80°C and at around pH7 and adjusting to ≥pH7.5, preferably, ≥pH8 with NH3, etc.
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Inventors:
Yasutaka Sumita
Mitsuhiro Kitajima
Yoshiaki Asakawa
Yuichi Kita
Mitsuhiro Kitajima
Yoshiaki Asakawa
Yuichi Kita
Application Number:
JP29899796A
Publication Date:
June 17, 2002
Filing Date:
November 11, 1996
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
B01J23/10; B01J27/18; C07B41/04; C07B61/00; C07C41/02; C07C51/367; C07C51/41; C07C59/305; C11D3/20; (IPC1-7): B01J23/10; B01J27/18; C07B41/04; C07B61/00; C07C41/02; C07C51/367; C07C59/305; C11D3/20
Domestic Patent References:
| JP242037A | ||||
| JP6228038A |
Other References:
【文献】米国特許5057627(US,A)
Attorney, Agent or Firm:
Takehiko Matsumoto
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