scholarly journals Acid–Base Bifunctional Hf Nanohybrids Enable High Selectivity in the Catalytic Conversion of Ethyl Levulinate to γ-Valerolactone

Catalysts ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 264 ◽  
Author(s):  
Weibo Wu ◽  
Yan Li ◽  
Hu Li ◽  
Wenfeng Zhao ◽  
Song Yang
Keyword(s):  
High Selectivity ◽  
Catalytic Conversion ◽  
Acid Base ◽  
Ethyl Levulinate

scholarly journals Acid-Base Bifunctional Hf Nanohybrids-Enabled High Selectivity in Catalytic Conversion of Ethyl Levulinate to γ-Valerolactone

2018 ◽  
Author(s):  
Weibo Wu ◽  
Yan Li ◽  
Hu Li ◽  
Wenfeng Zhao ◽  
Song Yang
Keyword(s):  
High Selectivity ◽  
Transfer Hydrogenation ◽  
Solid Catalyst ◽  
Practical Application ◽  
Acid Base ◽  
Reaction Conditions ◽  
Biomass Valorization ◽  
Solid Catalysts ◽  
Catalytic Upgrading ◽  
Ethyl Levulinate

Catalytic upgrading of bio-based platform molecules is one of promising approaches for biomass valorization. However, most solid catalysts are thermally and/or chemically unstable and difficult to prepare. In this study, a stable organic phosphonate-hafnium solid catalyst (PPOA-Hf) was synthesized, and acid-base bifunctional sites were found to play a cooperative role in the cascade transfer hydrogenation and cyclization of ethyl levulinate (EL) to γ-valerolactone (GVL). Under relatively mild reaction conditions of 160 ºC for 6 h, EL was completely converted to GVL in a good yield of 85%. The apparent activation energy was calculated to be 53 kJ/mol, which was lower than other solid catalysts for the same reaction. In addition, the PPOA-Hf solid catalyst did not significantly decrease its activity after five recycles, and no evident leaching of Hf was observed, indicating its high stability and potential practical application.

Design of Ordered Mesoporous Sulfonic Acid Functionalized ZrO 2 /organosilica Bifunctional Catalysts for Direct Catalytic Conversion of Glucose to Ethyl Levulinate

ChemCatChem ◽  
2018 ◽  
Vol 10 (21) ◽  
pp. 4953-4965 ◽  
Author(s):  
Daiyu Song ◽  
Qingqing Zhang ◽  
Yingnan Sun ◽  
Panpan Zhang ◽  
Yi‐Hang Guo ◽  
...  
Keyword(s):  
Sulfonic Acid ◽  
Catalytic Conversion ◽  
Bifunctional Catalysts ◽  
Ethyl Levulinate ◽  
Ordered Mesoporous

Design of graphene oxide by a one‐pot synthetic route for catalytic conversion of furfural alcohol to ethyl levulinate

2019 ◽  
Vol 94 (10) ◽  
pp. 3093-3101 ◽  
Author(s):  
Jiaming Wu ◽  
Yuewen Shao ◽  
Guojian Jing ◽  
Zhanming Zhang ◽  
Zhengmao Ye ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Conversion ◽  
Synthetic Route ◽  
One Pot ◽  
Ethyl Levulinate

Towards the sustainable production of pyridines via thermo-catalytic conversion of glycerol with ammonia over zeolite catalysts

2015 ◽  
Vol 17 (4) ◽  
pp. 2426-2435 ◽  
Author(s):  
Lujiang Xu ◽  
Zheng Han ◽  
Qian Yao ◽  
Jin Deng ◽  
Ying Zhang ◽  
...  
Keyword(s):  
High Selectivity ◽  
Catalytic Conversion ◽  
Sustainable Production ◽  
Zeolite Catalysts ◽  
High Yield

Thermo-catalytic conversion of renewable glycerol with ammonia over HZSM-5 for producing pyridines with high yield and high selectivity.

scholarly journals Catalytic conversion of methanol/ethanol to isobutanol – a highly selective route to an advanced biofuel

2016 ◽  
Vol 52 (29) ◽  
pp. 5202-5204 ◽  
Author(s):  
Richard L. Wingad ◽  
Emilie J. E. Bergström ◽  
Matthew Everett ◽  
Katy J. Pellow ◽  
Duncan F. Wass
Keyword(s):  
High Selectivity ◽  
Catalytic Conversion ◽  
Advanced Biofuel

Catalysts based on ruthenium diphosphine complexes convert methanol/ethanol mixtures to the advanced biofuel isobutanol, with extremely high selectivity (>99%) at good (>75%) conversion via a Guerbet-type mechanism.

Catalytic conversion of biomass-derived levulinic acid into alcohols over nanoporous Ru catalyst

2018 ◽  
Vol 8 (4) ◽  
pp. 975-979 ◽  
Author(s):  
Jinkun Lv ◽  
Zeming Rong ◽  
Liming Sun ◽  
Chengyun Liu ◽  
An-Hui Lu ◽  
...  
Keyword(s):  
Levulinic Acid ◽  
High Selectivity ◽  
Catalytic Conversion ◽  
Monohydric Alcohol ◽  
Ru Catalyst ◽  
Mild Conditions

1,4-pentanediol or monohydric alcohol were achieved with high selectivity from levulinic acid under relatively mild conditions using nanoporous Ru.

Attapulgite-supported magnetic dual acid-base catalyst for the catalytic conversion of lignin to phenolic monomers

2019 ◽  
Vol 94 (4) ◽  
pp. 1269-1281 ◽  
Author(s):  
Zhen Wu ◽  
Jun Zhang ◽  
Xinxu Zhao ◽  
Xun Li ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Catalytic Conversion ◽  
Base Catalyst ◽  
Acid Base

Enhanced direct production of sorbitol by cellulose ball-milling

2015 ◽  
Vol 17 (5) ◽  
pp. 2973-2980 ◽  
Author(s):  
Lucília S. Ribeiro ◽  
José J. M. Órfão ◽  
Manuel Fernando R. Pereira
Keyword(s):  
Ball Milling ◽  
High Selectivity ◽  
Environmentally Friendly ◽  
Catalytic Conversion ◽  
Direct Production ◽  
Environmentally Friendly Process

Promising progress has been made towards the catalytic conversion of cellulose into sorbitol with high selectivity by an environmentally friendly process.

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