利用原位透射红外光谱研究了2.8nm超细钴纳米粒子在2~3 MPa合成气(CO:H2=1:1)和100℃条件下催化的1-己烯氢甲酰化反应.结果表明,在反应中出现与Co2(CO)8类似的红外吸收峰(2071,2041和2022 cm-1),被证明是不同Co位点端式吸附CO.首次观测到了位于2054 cm-1处吸收峰处的物种,可能归属为RCH2CH2COCo.通过此中间物种,产物醛可以在钻催化剂表面经由结合一个氢原子脱除反应而获得.
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