>>Cu/Sn-β Catalyst Enabling the One-Step Synthesis of Methyl Acetate from Methanol Alone via Dehydrogenation Coupling
题名：Cu/Sn-β Catalyst Enabling the One-Step Synthesis of Methyl Acetate from Methanol Alone via Dehydrogenation Coupling
来源：ACS Sustainable Chemistry & Engineering
发表年代：2022
作者：Qiang Nie, Jiaqi Si, Chao Meng, Tian Lan, Weidong Sun, Guofeng Zhao, Ye Liu, Yong Lu*
Abstract：Methyl acetate (MA) can be directly synthesized via a methanol dehydrocoupling reaction. This study reports a Cu/Sn-β system with Sn-Cu synergistic catalysis, enabling one-step MA synthesis from methanol alone. The catalyst achieves a maximum MA space-time yield of 1.4 molMA kgcat⁻¹ h⁻¹ with 4.1% methanol conversion and 56.4% MA selectivity at 220°C. The mechanism involves electron transfer from Cu species to framework-confined Sn, stabilizing Cu⁺ sites. Lewis-acidic Sn/Cu⁺ pairs facilitate CH3O* and CH2O* coupling to form MA, demonstrating efficient methanol dehydrogenation and C-C coupling.
