Citation: LONG Jun-Ying, MA Lan, HE De-Hua. 1-Octene Hydroformylation Using Supported Amorphous Co-B Catalysts[J]. Acta Physico-Chimica Sinica, 2010, 26(10): 2719-2725. doi: 10.3866/PKU.WHXB20101022
负载型非晶态Co-B催化剂在1-辛烯氢甲酰化中的应用
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.
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关键词:
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Co-B 非晶态催化剂
- / 负载
- / 氢甲酰化
- / 催化性能
English
1-Octene Hydroformylation Using Supported Amorphous Co-B Catalysts
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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Key words:
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Amorphous Co-B catalyst
- / Support
- / Hydroformylation
- / Catalytic property
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