Highly selective hydrogenation of levulinic acid catalyzed by Ru on TiO2-SiO2 hybrid support

2020 ◽  
Vol 344 ◽  
pp. 158-165 ◽  
Author(s):  
Leandro D. Almeida ◽  
Ana Luiza A. Rocha ◽  
Thenner S. Rodrigues ◽  
Patricia A. Robles-Azocar
Keyword(s):  
Selective Hydrogenation ◽  
Levulinic Acid ◽  
Acid Catalyzed

Selective hydrogenation of levulinic acid to valeric acid and valeric biofuels by a Pt/HMFI catalyst

2014 ◽  
Vol 4 (9) ◽  
pp. 3227-3234 ◽  
Author(s):  
Kenichi Kon ◽  
Wataru Onodera ◽  
Ken-ichi Shimizu
Keyword(s):  
Selective Hydrogenation ◽  
Levulinic Acid ◽  
Acid Sites ◽  
Valeric Acid ◽  
High Yield ◽  
Brønsted Acid Sites ◽  
Mild Conditions ◽  
Brönsted Acid ◽  
Acid Catalyzed ◽  
Direct Hydrogenation

Valeric acid and valeric biofuels are obtained in high yield by direct hydrogenation of levulinic acid catalyzed by Pt/HMFI under relatively mild conditions (2 or 8 bar H2, 200 °C), driven by cooperation of the metal and support Brønsted acid sites.

Characteristics of Solid Super Acid SO42-/TiO2-Al2O3-SnO2 during Conversion of Glucose to Levulinic Acid

2012 ◽  
Vol 550-553 ◽  
pp. 103-106
Author(s):  
Ying Liu ◽  
Lu Lin ◽  
Xiao Yu Sui ◽  
Jun Ping Zhuang ◽  
Chun Sheng Pang
Keyword(s):  
Binding Energy ◽  
Levulinic Acid ◽  
Diffraction Peak ◽  
Catalyst Amount ◽  
Hydroxymethyl Furfural ◽  
Good Catalytic Activity ◽  
Super Acid ◽  
Diffraction Peaks ◽  
Acid Catalyzed ◽  
Hydrolysis Of

The effects of catalyst amount on the yields of levulinic and hydroxymethyl furfural were investigated during conversion of glucose to levulinic acid catalyzed by solid super acid SO42- / TiO2-Al2O3-SnO2. XRD and XPS were used to analyse the characteristics of solid super acid SO42- / TiO2-Al2O3-SnO2 before reaction and after reaction. The results showed that: solid super acid SO42- / TiO2-Al2O3-SnO2exhibited good catalytic activity in the reaction of hydrolysis of glucose to produce levulinic acid. There were three obvious peaks in these XRD spectra. The peaks on 44.6° and 67.1° were the characteristic diffraction peaks of γ-Al2O3. The anatase characteristic diffraction peak was on 37.4°. The catalyst was steady in the process. The binding energy of S 2p was similar to the binding energy of standard S6+ 2p in the S 2p XPS spectrum of solid super acid. O 1s XPS was double-peaked spectrum. The increase of element C was the main reason of inactivation of catalyst.

Methanesulfonic acid-catalyzed conversion of glucose and xylose mixtures to levulinic acid and furfural

2014 ◽  
Vol 52 ◽  
pp. 46-57 ◽  
Author(s):  
Darryn W. Rackemann ◽  
John P. Bartley ◽  
William O.S. Doherty
Keyword(s):  
Levulinic Acid ◽  
Methanesulfonic Acid ◽  
Acid Catalyzed

Levulinic acid synthesis from Indonesian sugarcane bagasse using two-step acid catalyzed treatment

2019 ◽  
Author(s):  
Muhammad Stally Argha Pradipta ◽  
Novrisca Rizky Purnamasari ◽  
Yano Surya Pradana
Keyword(s):  
Sugarcane Bagasse ◽  
Levulinic Acid ◽  
Acid Synthesis ◽  
Acid Catalyzed

Novel Cu/AlO-ZrO composite for selective hydrogenation of levulinic acid to -valerolactone

2019 ◽  
Vol 125 ◽  
pp. 82-86 ◽  
Author(s):  
Daiping He ◽  
Qingqing He ◽  
Ping Jiang ◽  
Gongbing Zhou ◽  
Rongqi Hu ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Levulinic Acid

scholarly journals Selective hydrogenation of levulinic acid to γ-valerolactone using in situ generated ruthenium nanoparticles derived from Ru–NHC complexes

2016 ◽  
Vol 45 (8) ◽  
pp. 3558-3563 ◽  
Author(s):  
Boon Ying Tay ◽  
Cun Wang ◽  
Pim Huat Phua ◽  
Ludger Paul Stubbs ◽  
Han Vinh Huynh
Keyword(s):  
Selective Hydrogenation ◽  
Levulinic Acid ◽  
Ruthenium Nanoparticles ◽  
Highly Active

Ruthenium(ii) NHC complexes give rise to highly active and selective ruthenium nanoparticles for the conversion of levulinic acid to γ-valerolactone in water.

Experimental and Kinetic Modeling Studies on the Sulfuric Acid Catalyzed Conversion of d-Fructose to 5-Hydroxymethylfurfural and Levulinic Acid in Water

2015 ◽  
Vol 3 (12) ◽  
pp. 3024-3034 ◽  
Author(s):  
Boy A. Fachri ◽  
Ria M. Abdilla ◽  
Henk H. van de Bovenkamp ◽  
Carolus B. Rasrendra ◽  
Hero J. Heeres
Keyword(s):  
Sulfuric Acid ◽  
Kinetic Modeling ◽  
Levulinic Acid ◽  
Modeling Studies ◽  
Acid Catalyzed
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