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| 1 | 2-Ethyl-9,10-anthraquinone assisted sol–gel synthesis of Pd/γ-Al2O3 nanorods with enhanced catalytic performance in 2-ethyl-9,10-anthraquinone hydrogenation显示文摘A series of nanorod-like porous Pd/γ-Al2 O3 catalysts with controllable textural properties and enhanced catalytic performance in 2-ethyl-9,10-anthraquinone(eAQ) hydrogenation for H2 O2 preparation were successfully prepared via a facile sol-gel method using aluminum isopropoxide as aluminum precursor and eAQ as structure directing agent,sequential calcination and impregnation process with Na2 PdCl4 solution.The physicochemical properties of the catalysts obtained with different addition amounts of eAQ.were comparatively characterized by XRD,TG-DSC,BET,TEM,CO-TPR,H2-TPR and H2-O2 titration.The results show that addition of eAQ can not only effectively control the textural properties(surface area,pore volume and average pore size) of the catalysts,but also lower their reduction temperature of active metal.Importantly,the catalyst obtained with an addition amount of 4 wt% eAQ shows the highest hydrogenation efficiency of 10.28 g·L^-1,which is 37.3% higher than 7.49 g·L^-1 of the catalyst obtained without eAQ. | Weiquan Cai Junlin Zhuo Jimin Fang Zhichao Yang | 2019 | Chinese Journal of Chemical Engineering2019，27，8： | 4 |
| 2 | 2-烷基蒽醌加氢合成过氧化氢的动力学研究显示文摘针对蒽醌法合成过氧化氢工艺,采用Pd基催化剂在温度为30~60℃、压力为0.15~0.35 MPa的条件下研究了2-烷基蒽醌加氢反应过程,并采用多元线性回归分析建立了幂指型动力学方程。结果表明:随着2-乙基蒽醌、2-丁基蒽醌、2-戊基蒽醌侧链烷基官能团空间位阻效应增大,加氢反应活化能依次提高(15.663,18.715,19.347 kJ/mol),H_(2)分压的反应级数增大,工作液中蒽醌浓度的反应级数和指前因子依次降低。在蒽醌转化率低于50%的条件下,2-乙基蒽醌加氢反应速率是2-丁基蒽醌的4.31倍、2-戊基蒽醌的6.63倍;在蒽醌法工况条件(55℃、0.3 MPa)下,H_(2)于双酰胺衍生物溶剂中的体积扩散传质系数(kLa)为0.162 s^(-1),明显优于工业常用溶剂磷酸三辛酯(0.091 s^(-1))、三甲苯(0.057 s^(-1))中的kLa。 | 白红鑫 方向晨 刘全杰 贾立明 彭冲 | 2022 | 化学反应工程与工艺2022，38，5： | 0 |
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