Improved catalytic performance of acid-activated sepiolite supported nickel and potassium bimetallic catalysts for liquid phase hydrogenation of 1,6-hexanedinitrile
Improved catalytic performance of acid-activated sepiolite supported nickel and potassium bimetallic catalysts for liquid phase hydrogenation of 1,6-hexanedinitrile
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酸活化海泡石负载镍钾双金属催化剂改进 1,6-己二腈液相加氢催化性能
DOI：
10.1016/j.molcata.2016.10.029
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
He'an Luo
中科院分区：
文献类型：
--
作者：
Fang Hao;Pingle Liu;Shaofeng Xiong;He'an Luo
用不同的无机酸活化海泡石，制备了酸活化的海泡石负载镍、钾双金属催化剂。采用氮气吸附-脱附、氢化学吸附、氨程序升温脱附(NH3-TPD)、程序升温还原(TPR)、粉末X-射线衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、傅立叶变换红外光谱(FTIR)和能量色散X射线(EDX)对催化剂进行了表征。考察了酸活化海泡石负载的K-Ni双金属催化剂在1，6-己二腈(HDN)液相加氢反应中的催化性能。结果表明，钾可以提高催化剂的碱度，从而抑制1-氮杂环庚烷(ACH)的生成。钾的加入减小了镍的粒度，改善了镍的分散性。与盐酸和硫酸相比，硝酸处理海泡石表面增加了更多的硅醇基(Sisingle BondOH)，有利于镍粒子的吸附和分散。硝酸活化的海泡石负载镍、钾双金属催化剂(K-Ni/NASEP)具有最好的催化性能，在较低的温度和压力下，HDN的转化率可达92.0%，6-氨基异丁腈(ACN)和1，6-己二胺(HDA)的选择性可达95.2%。
Different inorganic acids were used to activate sepiolite, and the acid-activated sepiolites supported nickel and potassium bimetallic catalysts were prepared. Nitrogen adsorption-desorption, hydrogen chemisorption, ammonia temperature programmed desorption (NH3-TPD), temperature programmed reduction (TPR), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR) and energy dispersive X-ray (EDX) were used to characterize the catalysts. The catalytic performance of the acid-activated sepiolite supported K-Ni bimetallic catalysts were investigated in 1,6-hexanedinitrile (HDN) hydrogenation in liquid phase. It was revealed that the potassium could increase the alkalinity of the catalyst with the aim of inhibiting the formation of the 1-azacycloheptane (ACH). And the addition of potassium reduces the particle size of nickel and improves its dispersion. Compared with hydrochloric acid and sulfuric acid, nitric acid treatment increases more silanol groups (Sisingle bondOH) on the sepiolite surface, which is helpful to nickel particles adsorption and dispersion. Nitric acid activated sepiolite supported nickel and potassium bimetallic catalysts (K-Ni/NASEP) present the best catalytic performance, the conversion of HDN comes up to 92.0% under moderate conditions of lower temperature and pressure, the selectivity to 6-aminocapronitrile (ACN) and 1,6-hexanediamine (HDA) is up to 95.2%.
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影响因子：
4.2
作者：
B. Kim;H. Sohn
通讯作者：
B. Kim;H. Sohn
DOI：
10.1016/s1003-6326(06)60221-5
发表时间：
2006-06
影响因子：
4.5
作者：
Fei Wang;Jinsheng Liang;Qingguo Tang;Junping Meng;Zi-zhao Wu;Guo-sheng Li
通讯作者：
Fei Wang;Jinsheng Liang;Qingguo Tang;Junping Meng;Zi-zhao Wu;Guo-sheng Li
DOI：
10.1039/ft9938903507
发表时间：
1993
期刊：
Journal of the Chemical Society, Faraday Transactions
影响因子：
--
作者：
F. Medina;P. Salagre;J. Sueiras;J. Fierro
通讯作者：
F. Medina;P. Salagre;J. Sueiras;J. Fierro
影响因子：
4.4
作者：
S. Shoval;K. Michaelian;M. Boudeulle;G. Panczer;I. Lapides;S. Yariv
通讯作者：
S. Shoval;K. Michaelian;M. Boudeulle;G. Panczer;I. Lapides;S. Yariv
DOI：
10.1016/j.jeurceramsoc.2007.11.022
发表时间：
2008-01-01
影响因子：
5.7
作者：
Esteban-Cubillo, A.;Pina-Zapardiel, R.;Pecharroman, C.
通讯作者：
Pecharroman, C.