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中文摘要：
以醇凝胶-氮气热处理方法制备的ZrO2、碳纳米管（CNTs）及介孔分子筛SBA-15作为载体,采用化学还原法制备了负载型非晶态Co-B催化剂,利用粉末X射线衍射（XRD）、氮气吸附等温线、透射电子显微镜（TEM）、电感耦合等离子体-原子发射光谱（ICP-AES）以及X射线光电子能谱（XPS）等对催化剂进行了表征.以1-辛烯的氢甲酰化为目标反应,考察了负载型非晶态Co-B催化剂在氢甲酰化反应中的性能及循环使用效果.表征结果显示,以NaBH4为还原剂制备的负载型Co-B催化剂上的Co-B为非晶态,负载Co-B组分对载体的晶相结构没有影响.反应结果表明,在1-辛烯的氢甲酰化反应中,负载型非晶态Co-B催化剂都显示较高的初始活性.随着循环次数的增加,三种催化剂的活性下降,但下降幅度有所不同,Co-B/CNTs和Co-B/SBA-15的循环使用稳定性高于Co-B/ZrO2.
英文摘要：
Co-B catalysts supported on ZrO2（prepared by alcogel nitrogen thermo-treatment method）,carbon nanotubes（CNTs）,and mesoporous SBA-15 as supports were prepared by chemical reduction method and characterized by X-ray diffraction（XRD）,nitrogen physisorption,transmission electron microscopy（TEM）,inductively coupled plasma-atomic emission spectrometry（ICP-AES） and X-ray photoelectron spectroscopy（XPS）.Hydroformylation of 1-octene was used as a probe reaction to investigate the catalytic performance and stability of the catalysts in recycles.The as-prepared Co-B catalysts showed amorphous characteristics and the support structures were unchanged.The reaction results reveal that the catalytic activities of Co-B/CNTs,Co-B/ZrO2 and Co-B/SBA-15 in the hydroformylation of 1-octene were comparatively high.However,the catalytic activities decreased upon recycling.Nevertheless,the Co-B/ CNTs and Co-B/SBA-15 were relatively stable compared with Co-B/ZrO2.
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