Promotion Effect of Sn on Au/Sn-USY Catalysts for One-Pot Conversion of Glycerol to Methyl Lactate

ACS Catalysis ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. 7274-7284 ◽  
Author(s):  
Tianliang Lu ◽  
Xiaomin Fu ◽  
Lipeng Zhou ◽  
Yunlai Su ◽  
Xiaomei Yang ◽  
...  

2012 ◽  
Vol 425-426 ◽  
pp. 85-90 ◽  
Author(s):  
Tamao Ishida ◽  
Hiroto Watanabe ◽  
Takashi Takei ◽  
Akiyuki Hamasaki ◽  
Makoto Tokunaga ◽  
...  


ChemInform ◽  
2014 ◽  
Vol 45 (36) ◽  
pp. no-no
Author(s):  
Rajeesh Kumar P. Purushothaman ◽  
Jacco van Haveren ◽  
Ignacio Melian-Cabrera ◽  
Ernst R. H. van Eck ◽  
Hero J. Heeres


Author(s):  
Yuan Xiao ◽  
Shuguang Xu ◽  
Wenyu Zhang ◽  
Jianmei Li ◽  
Changwei Hu


2020 ◽  
Vol 10 (3) ◽  
pp. 700-709 ◽  
Author(s):  
Xiaomei Yang ◽  
Bin Lv ◽  
Tianliang Lu ◽  
Yunlai Su ◽  
Lipeng Zhou

Mg-Sn-Beta zeolites with different Mg/Sn molar ratios were prepared from the parent deAl-Beta by a coimpregnation method. It shows higher selectivity for the conversion of glucose to methyl lactate than post-synthesized Sn-Beta.



ChemSusChem ◽  
2014 ◽  
Vol 7 (4) ◽  
pp. 1140-1147 ◽  
Author(s):  
Rajeesh Kumar Pazhavelikkakath Purushothaman ◽  
Jacco van Haveren ◽  
Ignacio Melián-Cabrera ◽  
Ernst R. H. van Eck ◽  
Hero J. Heeres




10.1039/sp425 ◽  
2010 ◽  
Author(s):  
Christopher Cooksey
Keyword(s):  




2020 ◽  
pp. 43-47
Author(s):  
S.V. Prudius ◽  
◽  
N.L. Hes ◽  
A.M. Mylin ◽  
V.V. Brei ◽  
...  

In recent years, numerous researchers have focused on the development of catalytic methods for processing of biomass-derived sugars into alkyl lactates, which are widely used as non-toxic solvents and are the starting material for obtaining monomeric lactide. In this work, the transformation of fructose into methyl lactate on Sn-containing catalyst in the flow reactor that may be of practical interest was studied. The supported Sn-containing catalyst was ob-tained by a simple impregnation method of granular γ-Al2O3. The catalytic ex-periments were performed in a flow reactor at temperatures of 160-190 °C and pressure of 3.0 MPa. The 1.6-9.5 wt.% fructose solutions in 80% aqueous methanol were used as a reaction mixture. It was found that addition to a reac-tion mixture of 0.03 wt.% potassium carbonate leads to the increase in selec-tivity towards methyl lactate on 15% at 100% conversion of fructose. Prod-ucts of the target reaction С6Н12О6 + 2СН3ОН = 2С4Н8О3 + 2Н2О were ana-lyzed using 13C NMR method. The following process conditions for obtaining of 65 mol% methyl lactate yield at 100% fructose conversion were found: use of 4.8 wt.% fructose solution in 80% methanol, 180 °С, 3.0 МПа and a load on catalyst 1.5 mmol C6H12O6/mlcat/h at contact time of 11 minutes. The cata-lyst productivity is 2.0 mmol C4H8O3/mlcat/h and the by-productі are 1,3-dihydroxyacetone dimethyl acetal (20%) and 5-hydroxymethylfurfural (10%). It should be noted that a racemic mixture of L- and D-methyl lactates has been obtained by conversion of D-fructose on the SnO2/Al2O3 catalyst. The SnO2/Al2O3 catalyst was found to be stable for 6 h while maintaining full fruc-tose conversion at 55–70% methyl lactate selectivity. After regeneration the catalyst completely restores the initial activity.



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