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本文用ＴＰＲ，ＩＲ，ＴＰＤ和ＴＰＳＲ等技术研究了以表面改性法制备的ＭｇＯ－ＳｉＯ２（ＭＳＯ）表面复合物担载的Ｎｉ－ＣＵ合金间的相互作用及其对ＣＯ加氢反应催化性能的影响．结果表明，ＮｉＯ－ＣｕＯ与ＭＳＯ间的相互作用导致部分ＭＯ与ＭＳＯ形成表面物种从而使金属组分氧化物还原温度明显升高；还原后的Ｎｉ－Ｃｕ／ＭＳＯ表面上存在着两类活性中心，即合金相中的Ｎｉ与载体相中的Ｍｇ２＋（或Ｍｇ２＋－Ｏ）；在两类活性中心的协同作用下，ＣＯ吸附除有孪生、线式和桥式吸附态物种外，还有一种新的卧式吸附态（Ｎｉ．．．Ｃ＝Ｏ→Ｍｇ２＋）．这种吸附态的活化程度较高，易在表面上发生裂解形成Ｎｉ－Ｃ和Ｍｇ２＋－Ｏ，其中Ｎｉ－Ｃ是加氢反应的碳源；Ｈ２在催化剂表面上发生解离吸附形成Ｎｉ－Ｈ和Ｍｇ２＋－ＯＨ，前者比较活泼，是加氢反应的氢原．ＣＯ加氢生成烃类的反应在Ｎｉ中心上按＂表面碳＂机理进行，其生成ＣＺＨ４的选择性高于８０％；Ｈ２Ｏ的生成反应按２（Ｍｇ２＋－ＯＨ）－→Ｍｇ２＋＋（Ｍｇ２＋－Ｏ）＋Ｈ２Ｏ方式进行．
In this paper, the interaction between Ni-Cu alloy supported by MgO-SiO2 (MSO) surface composites prepared by surface modification and their catalytic performance for hydrogenation of CO has been investigated by means of TPR, IR, TPD and TPSR influences. The results showed that the interaction between NiO-CuO and MSO led to the formation of some surface species of MO and MSO, which led to the obvious increase of the metal oxide reduction temperature. There were two kinds of active sites on the surface of Ni-Cu / That is, Ni in the alloy phase and Mg2 + (or Mg2 + -O) in the carrier phase. In addition to the twin, linear and bridge-adsorbed species, there is a new Horizontal adsorption state (Ni ... C = O → Mg2 +). This kind of adsorbed state has a high degree of activation and easily cleaves on the surface to form Ni-C and Mg2 + -O, wherein Ni-C is a carbon source for hydrogenation reaction; and H2 dissociates and adsorbs on the surface of the catalyst to form Ni-H And Mg2 + -OH, the former more lively, hydrogenation hydrogenation reaction. The reaction of hydrogenation of CO to hydrocarbons takes place on the center of Ni by the “surface carbon” mechanism, the selectivity to CZH4 is higher than 80%; the formation reaction of H2O is carried out according to 2 (Mg2 + -OH) - → Mg2 + + (Mg2 + -O) + H2O way.