Catalytic transfer hydrogenolysis of 2-phenyl-2-propanol over palladium supported on activated carbon

✍ Scribed by Xiaohui Liu; Guanzhong Lu; Yanglong Guo; Yun Guo; Yunsong Wang; Xinhong Wang

• Book ID: 103834391
• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 178 KB
• Volume: 252
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/j.molcata.2006.02.055

✦ Synopsis

Transfer hydrogenolysis of 2-phenyl-2-propanol to isopropylene using formic acid as hydrogen donor was performed over the supported palladium, platinum and ruthenium catalysts. The hydrogen-donating abilities of various hydrogen donors and the effect of the pH value in a reaction medium were studied. It was found that Pd/C is an effective catalyst and formic acid is much better than formate salts and other agents of donating-hydrogen for the catalytic transfer hydrogenolysis of 2-phenyl-2-propanol. The protons in a reaction medium have a promotive effect on the catalytic hydrogenolysis of 2-phenyl-2-propanol. At the reaction condition of using formic acid as hydrogen donor and the Pd/C catalyst at 80 • C for 4 h, the conversion of 2-phenyl-2-propanol and selectivity to isopropylbenzene reaches 95.2 and 98.4%, respectively.