1. School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Hubei 430073, P. R. China
2. National Engineering Laboratory for Green Chemical Productions of Alcohols-ethers-esters, College of Chemistry and Chemical Engineering, Xiamen University, Fujian 361005, P. R. China
3. SINOPEC Shanghai Research Institute of Petrochemical Technology, Shanghai 201208, P. R. China