Pulse injection of CH3I and CH3OH into the in situ cell resulted in the appearance of some crucial C2 intermediates in the reaction, such as surface acctyl, acetate, ketene and enolate .

• 捕获剂CH_3I和CH_3OH以脉冲方式引入原位红外池,分别捕获到一些较关键的C_2中间物:表面乙酰基、表面乙酸盐、乙烯酮和烯醇盐。