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- 저자 : Cuili Guo (검색결과 2 건)
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Effect of La2O3 promoter on NiO/Al2O3 catalyst in CO methanation
Hongyun Qin,Cuili Guo,Yuanyuan Wu,Juntao Zhang 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.7
A series of NiO/Al2O3 catalysts promoted by different La2O3 contents were prepared by impregnation method. The physicochemical properties of NiO-La2O3/Al2O3 were characterized by N2 adsorption-desorption, X-ray diffraction(XRD), H2 temperature programmed reduction (H2-TPR) and H2 chemisorption. The effect of La2O3 on the activityof NiO/Al2O3 for CO methanation was investigated in a fixed bed reactor. A lifetime test, as well as thermogravimetric(TG) analysis, was performed to investigate the stability performance and anti-carbon deposition of catalysts. Theresults showed that the addition of La2O3 can restrain the growth of NiO particles, increase the H2 uptake and Ni dispersion,and therefore enhance the activity of catalysts. When the La2O3 content was 3 wt%, a CO conversion of 98%and a selectivity to CH4 of 96% were obtained at 400 oC. Furthermore, the catalyst NiO-La2O3/Al2O3 with 3 wt% La2O3content displayed highly stable performance in long-term tests, especially exhibiting good anti-carbon deposition property.
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Bimetallic Au–Sn/AC catalysts for acetylene hydrochlorination
Yanzhao Dong,Haiyang Zhang,Wei Li,Mengxia Sun,Cuili Guo,Jinli Zhang 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.35 No.-
A series of Au–Sn/AC catalysts for acetylene hydrochlorination were prepared by an incipient wetnessimpregnation method and characterized by BET, XPS, TEM, TPR, XRD, ICP-AES and TPD techniques. It isindicated that Au1Sn1/AC catalyst shows the highest activity and stability with the 95% acetyleneconversion after 48 h reaction under the conditions of 170 8C and an acetylene gas hourly space velocityof 720 h 1. The Sn additive can make the Au species dispersed well and weaken the occurrence of cokedeposition, as well as inhibit the reduction of Au3+ to Au0, thereby improving the catalytic activity andstability.
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