| 戴啟文,王丰,王吉德,王璐.化学通报,2017,80(8):751-759. |
| 水蒸汽活化活性炭及其负载乙炔氢氯化铋基催化剂 |
| Steam activation to activated carbon and its supported Bi-based catalyst for acetylene hydrochlorination |
| 投稿时间：2017-02-19 修订日期：2017-03-24 |
| DOI： |
| 中文关键词: 活性炭 水蒸汽活化 铋基催化剂 乙炔氢氯化 孔结构 |
| 英文关键词:Activated carbon, Steam activation, Bi-based catalyst, Acetylene hydrochlorination, Pore structure |
| 基金项目:国家自然科学基金项目 |
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| 中文摘要: |
| 以水蒸汽活化的两种活性炭为载体，采用等体积浸渍法制备了一系列Bi/AC催化剂，考察了其乙炔氢氯化反应的催化性能。分别通过氮气吸附脱附实验(BET)，扫描电子显微镜(SEM)，傅里叶变换红外(FTIR)，透射电子显微镜(TEM)，X射线粉末衍射(XRD)，X射线光电子能谱(XPS)和热重分析(TGA)对活性炭和催化剂进行表征。结果表明：（1）水蒸汽活化重整了活性炭的孔径和孔道，尤其是介孔材质活性炭，增加了其比表面积，形成了新的微孔结构。（2）积碳是Bi/AC催化剂失活的主要原因，水蒸汽活化抑制了积碳，并增加了BiOCl的结晶度和分散性，提高了乙炔氢氯化反应的催化性能。 |
| 英文摘要: |
| Two kinds of activated carbons (ACs) were activated by steam and series of Bi/AC catalysts supported on steam-activated ACs were prepared by incipient-wetness impregnation method. The catalytic performance for acetylene hydrochlorination was investigated. The characterization to ACs and catalysts were conducted by N2 adsorption-desorption experiments (BET), scanning electron microscopy (SEM), Fourier transform-infrared spectroscopy (FTIR), transmission electron microscopy (TEM), powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA) methods, respectively. The results reveal that: (1) Steam activation reorganized the pore size and channel structure of ACs, particularly to the mesoporous AC, whose specific surface area was increased and new micropore structure was formed. (2) Steam activation decreased the amount of coke deposition, which was the decisive factors affecting the catalytic activity, and generated higher degree of crystallinity and better dispersity of BiOCl, thus improving the catalytic performance for acetylene hydrochlorination. |
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