发明名称 |
Synthesis and use of a nano-crystalline zinc chromite catalyst, comprising nano-palladium |
摘要 |
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 (CO 2 TPD), and nitrogen adsorption at -196°C. The Pd-supported nano- ZnO mixed with different oxides such as Cr 2 O 3 , CrO 3 , MgO, and ³-A1 2 O 3 showed 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 -ZnCr 2 O 4 was 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. |
申请公布号 |
EP2418017(A1) |
申请公布日期 |
2012.02.15 |
申请号 |
EP20110154278 |
申请日期 |
2011.02.14 |
申请人 |
KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY |
发明人 |
BAGABAS, ABDULAZIZ A.;AKHMEDOV, VAGIF MALIK;MOSTAFA, MOHAMED MOKHTAR MOHAMED;AL-RABIAH, ABDULRAHMAN A. |
分类号 |
B01J37/04;B01J23/60;B01J23/652;C07C45/62;C07C45/73;C07C45/74;C07C49/203 |
主分类号 |
B01J37/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|