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Chemcial Industry and Engineering 2017, Vol. 34 Issue (1) :1-8,18    DOI: 10.13353/j.issn.1004.9533.20151032
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Titanium Phosphate Support Ru Bifunctional Catalyst Catalyze Cellulose into Sorbitol
Zhang Yu, Han Jinyu, Wang Hua, Guo Yingge
Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Abstract 

Sorbitol is one of valuable platform molecules in the cellulose hydro-conversion. The solid acid titanium phosphate, TiOPO4 and bifunctional catalyst titanium phosphate support Ru, Ru/TiOPO4 were prepared. At first, aiming at yielding high glucose, we systematically investigated the influence of reaction time, hydrogen pressure and temperature in cellulose hydrolysis reaction catalyzed by titanium phosphate. Basing on the optimization result of cellulose hydrolysis reaction, we studied the hydrogenation reaction of cellulose conversion to sorbitol catalyzed by titanium phosphate support Ru. Experiments results proved that a better sorbitol yield could be obtained under the reaction condition which the hydrogenation reaction temperature (453 K) is slightly lower than the optimial hydrolysis temperature(463 K) and the hydrogenation time is also a little lower than optimal hydrolysis time. After optimization, the highest sorbitol yield of 77.6% was obtained, with the conversion 99.3%. We can draw a conclusion through various ratio of catalyst and cellulose experiments that the existence of the bifunctional catalyst Ru/TPO can hydrogenate in a great degree, reduce further degradation of glucose and the carbon recovery have significantly be improved, which can get more than 80%.

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Articles by authors
Zhang Yu
Han Jinyu
Wang Hua
Guo Yingge
Keywordstitanium oxophosphate;   bifunctional catalyst;   solid acid;   sorbitol;   catalysis     
Received 2015-03-18;
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Zhang Yu, Han Jinyu, Wang Hua, Guo Yingge.Titanium Phosphate Support Ru Bifunctional Catalyst Catalyze Cellulose into Sorbitol[J]  Chemcial Industry and Engineering, 2017,V34(1): 1-8,18
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