Selective hydrogenation of 1-hexyne/1-hexene mixture on mesoporous silica gel doped with dysprosium, lanthanum, and modified with silver

被引：2
|
作者：
Tokranov, Aleksander A. [1 ]
Tokranova, Elena O. [1 ]
Shagifulin, Roman V. [1 ]
Pavlova, Larisa V. [1 ]
Mukhanova, Irina M. [1 ]
Platonov, Igor A. [1 ]
Bulanova, Andzhela V. [1 ]
机构：
[1] Samara Univ, 34,Moskovskoye Shosse, Samara 443086, Russia
来源：
REACTION KINETICS MECHANISMS AND CATALYSIS | 2023年 / 136卷 / 01期
关键词：
Selective hydrogenation; Mesoporous silica gels; Doping with dysprosium; Doping with lanthanum; Modification with silver; CATALYTIC PERFORMANCE; HIGHLY EFFICIENT; PD; STABILITY; OXIDATION; AG; EVOLUTION; METHANE; NICKEL; ZN;
D O I：
10.1007/s11144-022-02344-1
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Selective hydrogenation of 1-hexyne/1-hexene mixture was studied in the temperature range of 100-150 & DEG;C (hydrogen pressure of 3 atm) on a catalyst based on mesoporous silica gel (MPS) doped with dysprosium, lanthanum and modified with silver (Dy-Ag/MPS, La-Ag/MPS). The catalysts were studied by scanning electron microscopy, X-ray fluorescence, X-ray diffraction analysis, Fourier-transform infrared spectroscopy, temperature programmed reduction and inductively coupled plasma mass spectrometry. It was found that the conversions of 1-hexyne on Dy-Ag/MPS are higher than on La-Ag/MPS. Moreover, it has been shown that the Dy-Ag/MPS sample exhibits greater efficiency and selectivity for 1-hexene in the hydrogenation of a 1-hexyne/1-hexene mixture. In addition, it was shown that the selectivity of Dy-Ag/MPS for 1-hexene remains the same with an increase of 1-hexyne concentration in the mixture.
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页码：217 / 231
页数：15
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