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:
May. 31, 2011
Filed:
Aug. 15, 2010
Abdulaziz Ahmed Bagabas, Riyadh, SA;
Vagif Melik Akhmedov, Baku, AZ;
Abdulrahman Al-rabiah, Riyadh, SA;
Mohamed Mokhtar Mohamed Mostafa, Cairo, EG;
Abdulaziz Ahmed Bagabas, Riyadh, SA;
Vagif Melik Akhmedov, Baku, AZ;
Abdulrahman Al-Rabiah, Riyadh, SA;
Mohamed Mokhtar Mohamed Mostafa, Cairo, EG;
Abstract
Several metal-supported catalyst compositions based on nano-crystalline zinc oxide were synthesized and characterized by X-ray powder diffraction (XRD), Carbon dioxide temperature programmed desorption (COTPD), and nitrogen adsorption at −196° C. The Pd-supported nano-ZnO mixed with different oxides such as CrO, CrO, MgO, and γ-AlOshowed high catalytic activity in acetone condensation in gas-phase process under hydrogen flow. This reaction involves the base-acid coupling of acetone to form mesityl oxide, followed by its hydrogenation to methyl isobutyl ketone (MIBK). The novel catalyst 1% wt. n-Pd/n-ZnCrOwas utilized during gas-phase reaction during production of MIBK. MIBK selectivity was 70-72% at 66-77% acetone conversion at 300-350° C. Diisobutyl ketone (DIBK) was the main by-product, with a total MIBK+DIBK selectivity up to 88%. The prepared catalysts showed stable activity and may be used repeatedly and for a longer period of time.