Title:
PROCESS FOR DEHYDRATION OF POLYHYDRIC ALCOHOLS
Document Type and Number:
WIPO Patent Application WO/2007/058221
Kind Code:
A1
Abstract:
The invention has been accomplished in view of the above circumstances and aims at providing a process for production of dehydrates by gas-phase dehydration which is excellent in yield and selectivity and economically advantageous in industrial practice and a catalyst for gas-phase dehydration to be used in the process. The invention also aims at providing, as preferable embodiments, an embodiment wherein acrolein can be obtained from glycerol through gas-phase dehydration with high selectivity, particularly, an embodiment wherein acrolein can be produced in high yield even when a high-concentration glycerol solution is used to thereby obtain a high-concentration acrolein solution directly, and an embodiment wherein the catalyst little deteriorates even after the lapse of time. The invention further aims at providing a novel catalyst suitable for producing acrolein from glycerol not originating from petroleum and a process for producing acrolein efficiently from such glycerol. The invention relates to a process for the production of dehydrates by gas-phase dehydration of a compound having three or more hydroxyl groups which comprises the step of bringing the compound into contact with a gas-phase dehydration catalyst containing at least one Group 6 element.
Inventors:
XU BO-QING (CN)
CHAI SONG-HAI (CN)
TAKAHASHI TSUKASA (JP)
SHIMA MASAHIDE (JP)
SATO SATOSHI (JP)
TAKAHASHI RYOUJI (JP)
CHAI SONG-HAI (CN)
TAKAHASHI TSUKASA (JP)
SHIMA MASAHIDE (JP)
SATO SATOSHI (JP)
TAKAHASHI RYOUJI (JP)
Application Number:
PCT/JP2006/322777
Publication Date:
May 24, 2007
Filing Date:
November 15, 2006
Export Citation:
Assignee:
NIPPON CATALYTIC CHEM IND (JP)
XU BO-QING (CN)
CHAI SONG-HAI (CN)
TAKAHASHI TSUKASA (JP)
SHIMA MASAHIDE (JP)
SATO SATOSHI (JP)
TAKAHASHI RYOUJI (JP)
XU BO-QING (CN)
CHAI SONG-HAI (CN)
TAKAHASHI TSUKASA (JP)
SHIMA MASAHIDE (JP)
SATO SATOSHI (JP)
TAKAHASHI RYOUJI (JP)
International Classes:
B01J23/30; B01J27/188; B01J27/19; C07C45/66; C07C47/22; C07B61/00
Domestic Patent References:
| WO2006087083A2 | 2006-08-24 | |||
| WO2006087084A2 | 2006-08-24 |
Foreign References:
| JPH06211724A | 1994-08-02 | |||
| JPH06192147A | 1994-07-12 |
Attorney, Agent or Firm:
YASUTOMI, Yasuo et al. (5-36 Miyahara 3-chome, Yodogawa-ku, Osaka-sh, Osaka 03, JP)
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