Selective conversion of levulinic acid to gamma-valerolactone over Ni-based catalysts: Impacts of catalyst formulation on sintering of nickel

2021 ◽  
pp. 117258
Author(s):  
Yuewen Shao ◽  
Kai Sun ◽  
Mengjiao Fan ◽  
Junzhe Wang ◽  
Guoming Gao ◽  
...  
Keyword(s):  
Levulinic Acid ◽  
Selective Conversion

Selective conversion of furfuryl alcohol to levulinic acid by SO3H-containing silica nanoflower in GVL/H2O system

2021 ◽  
Vol 171 ◽  
pp. 124-132
Author(s):  
Ruoqing Wang ◽  
Feng Shen ◽  
Yiwei Tang ◽  
Haixin Guo ◽  
Richard Lee Smith ◽  
...  
Keyword(s):  
Furfuryl Alcohol ◽  
Levulinic Acid ◽  
Selective Conversion

Copper-based catalysts with tunable acidic and basic sites for the selective conversion of levulinic acid/ester to γ-valerolactone or 1,4-pentanediol

2019 ◽  
Vol 21 (16) ◽  
pp. 4499-4511 ◽  
Author(s):  
Yuewen Shao ◽  
Kai Sun ◽  
Qingyin Li ◽  
Qianhe Liu ◽  
Shu Zhang ◽  
...  
Keyword(s):  
Acid Ester ◽  
Levulinic Acid ◽  
Basic Sites ◽  
Selective Conversion

Selective conversion of levulinic acid/ester to γ-valerolactone or 1,4-pentanediol was achieved over copper-based catalysts with tunable acidic and basic sites.

scholarly journals Unexpected chloro-functionalized ionic liquids-promoted selective conversion of cellulose into levulinic acid

BioResources ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. 9155-9165
Author(s):  
Hao Ma ◽  
Yanhui Qiao ◽  
Junjiang Teng
Keyword(s):  
Ionic Liquids ◽  
Formic Acid ◽  
Levulinic Acid ◽  
Imidazolium Chloride ◽  
Cellulose Conversion ◽  
Selective Conversion

A series of chloro-functionalized ionic liquids (CFILs) with chlorine groups (–Cl) on cations and chloride anions (Cl-) were synthesized and used as the promotion reagents for the selective conversion of cellulose into levulinic acid (LA) with the co-product of formic acid (FA). The co-operation between cations and anions of CFILs was investigated intensively through the variation of the structure of cations and the addition of salts with different anions. 3-(3-chloropropyl)-1-methyl-imidazolium chloride (IL-3) was the most appropriate additive, achieving up to 4.2%, 52.6%, and 58.7% of glucose, LA, and FA yields at 83.5% of cellulose conversion, respectively.

Selective conversion of cellulose to levulinic acid and furfural in sulfolane/water solvent

Cellulose ◽  
2017 ◽  
Vol 24 (3) ◽  
pp. 1383-1394 ◽  
Author(s):  
Kui Wang ◽  
Jun Ye ◽  
Minghao Zhou ◽  
Peng Liu ◽  
Xinyu Liang ◽  
...  
Keyword(s):  
Levulinic Acid ◽  
Selective Conversion ◽  
Water Solvent

Balanced distribution of Brønsted acidic sites and Lewis acidic sites for highly selective conversion of xylose into levulinic acid/ester over Zr-beta catalysts

2019 ◽  
Vol 21 (24) ◽  
pp. 6634-6645 ◽  
Author(s):  
Yuewen Shao ◽  
Kai Sun ◽  
Lijun Zhang ◽  
Qing Xu ◽  
Zhanming Zhang ◽  
...  
Keyword(s):  
Acid Ester ◽  
Levulinic Acid ◽  
Selective Conversion ◽  
Balanced Distribution ◽  
Lewis Acidic Sites ◽  
Acidic Sites

Highly selective conversion of xylose into levulinic acid/ester was achieved over the Zr-beta catalyst with balanced distribution of acidic sites.

Selective conversion of chitin to levulinic acid catalyzed by ionic liquids: distinctive effect of N-acetyl groups

2020 ◽  
Vol 22 (1) ◽  
pp. 62-70 ◽  
Author(s):  
Wuxin Hou ◽  
Qingyang Zhao ◽  
Li Liu
Keyword(s):  
Ionic Liquids ◽  
Levulinic Acid ◽  
Selective Conversion ◽  
Acid Catalyzed

Selective and green conversion of chitin to levulinic acid has been realized by catalysis of ionic liquids up to a yield of 67.0%. Two-approach mechanism was proposed in the presence of H-bonding networks mainly contributed by the N-acetyl groups.

Preparation of valeric acid and valerate esters from biomass-derived levulinic acid using metal triflates + Pd/C

2018 ◽  
Vol 20 (17) ◽  
pp. 3974-3980 ◽  
Author(s):  
Jian Zhou ◽  
Rui Zhu ◽  
Jin Deng ◽  
Yao Fu
Keyword(s):  
Levulinic Acid ◽  
Valeric Acid ◽  
Selective Conversion ◽  
Metal Triflates

The selective conversion of biomass-derived levulinic acid to produce valeric acid and valerate esters was successfully performed in the presence of H2, in which metal triflates and Pd/C were used as the catalysts.

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