The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 2019
Filed:
May. 01, 2015
Mitsubishi Chemical Corporation, Tokyo, JP;
Toshiya Yasukawa, Otake, JP;
Tatsuya Suzuki, Otake, JP;
Akio Takeda, Otake, JP;
Wataru Ninomiya, Otake, JP;
Kenichi Miyaki, Otake, JP;
Ken Ooyachi, Otake, JP;
Shuji Akihara, Sapporo, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
The purpose of the present invention is to provide a method that can produce, with high yield or high selectivity isobutylene by means of isobutanol dehydration-reaction. An isobutylene production method of a first embodiment of the present invention is a method for producing isobutylene by means of isobutanol dehydration-reaction, wherein isobutanol is reacted using a catalyst for which the BET specific surface area is within the range of 60 m/g-175 m/g, and the reaction is carried out under a reaction pressure of 50 kPa-750 kPa as the absolute pressure. An isobutylene production method of a second embodiment of the present invention includes: using a catalyst which is filled into a reaction chamber and for which the particle diameters of at least 90 mass % of the catalyst are within the range of 700 μm-1000 μm; setting the isobutanol concentration within a supplied reaction gas to 30 vol %-85 vol %; setting the weight hourly velocity (WHSV) of the isobutanol to 0.175 h˜20 h; and reacting isobutanol under a reaction pressure of 50 kPa-750 kPa as the absolute pressure.