Ga Modified Zeolite Based Solid Acid Catalyst for Levulinic Acid Production

2016 ◽  
Vol 1 (18) ◽  
pp. 5952-5960 ◽  
Author(s):  
Vijay Bhooshan Kumar ◽  
Indra Neel Pulidindi ◽  
Rahul Kumar Mishra ◽  
Aharon Gedanken
Keyword(s):  
Acid Production ◽  
Levulinic Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Modified Zeolite

Synthesis of hexyl levulinate as a potential fuel additive from levulinic acid over a solid acid catalyst

2019 ◽  
Vol 7 (5) ◽  
pp. 103420 ◽  
Author(s):  
Mahsasadat Mortazavi Tabrizi ◽  
Alireza Najafi Chermahini ◽  
Zahra Mohammadbagheri
Keyword(s):  
Levulinic Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Fuel Additive

Production of Levulinic Acid from Cellulose Catalyzed by Environmental-Friendly Catalyst

2010 ◽  
Vol 96 ◽  
pp. 183-187 ◽  
Author(s):  
Pan Wang ◽  
Si Hui Zhan ◽  
Hong Bing Yu
Keyword(s):  
Catalytic Activity ◽  
Levulinic Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Impregnation Method ◽  
Acid Yield ◽  
Environmental Friendly ◽  
Sulfated Tio2 ◽  
Catalyst Dosage

Using solid acid catalyst for the levulinic acid (LA) production from cellulose is one of the promising methods for utilization of biomass. An environmentally friendly solid acid catalyst, sulfated TiO2 was prepared by precipitation-impregnation method and used to catalyze the production of levulinic acid from cellulose. The concentration of sulphuric acid had a remarkable influence on the construction and catalytic activity of sulfated TiO2. The influence of reaction temperature and catalyst dosage on levulinic acid yield was also investigated with the aim to obtain the highest yield of LA. The optimum condition for the highest yield of levulinic acid (27.2%) was achieved at 240 °C, 0.7g of sulfated TiO2 and reaction time of 15 min. The recycling test indicated that the catalytic activity of the catalyst had a slight decrease after being used two times.

ESTERIFICATION OF RENEWABLE LEVULINIC ACID TO LEVULINATE ESTERS USING AMBERLYST-15 AS A SOLID ACID CATALYST

2016 ◽  
Vol 79 (1) ◽  
Author(s):  
Nur Aainaa Syahirah Ramli ◽  
Nur Hidayah Zaharudin ◽  
Nor Aishah Saidina Amin
Keyword(s):  
Levulinic Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Molar Ratio ◽  
Catalyst Loading ◽  
Process Conditions ◽  
Amberlyst 15 ◽  
Methyl Levulinate ◽  
Exchange Resins

Levulinic acid (LA) is a versatile biomass-derived building block as it can be used for the synthesis of organic chemicals as alternative to the depleting fossil fuel resources. Levulinate esters, obtained from catalytic esterification of LA with alcohol, can be used in many applications such as fragrance and fuel additives. In this study, ion-exchange resins Amberlyst-15 was employed as solid acid catalyst for esterification of LA with methanol for methyl levulinate (ML) production. The effect of reaction time, catalyst loading, and molar ratio of LA to methanol, was investigated on LA esterification to ML at the reflux condition. The optimum ML yield of 82% was obtained from reaction conducted at reflux temperature for 5h, using 30% of Amberlyst-15 loading, and 1:20 of LA to methanol molar ratio. The reusability of Amberlyst-15 for ML production was examined for five successive reactions. In addition, Amberlyst-15 catalyst, employed in the esterification of LA with ethanol and 1-butanol for ethyl levulinate (EL) and butyl levulinate (BL), respectively, registered good performance. Yields of 71% and 55% have been obtained for EL and BL, respectively. Amberlyst-15 is a promising solid acid catalyst for production of biomass derived levulinate esters at mild process conditions. 

Optimal Process Conditions for Levulinic Acid Synthesis from Glucose Using ZSM-5 Supported SO42-/ZrO2 Catalysts

2012 ◽  
Vol 538-541 ◽  
pp. 2256-2259 ◽  
Author(s):  
Jun Ping Zhuang ◽  
Xue Ping Li ◽  
Ying Liu
Keyword(s):  
Levulinic Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Acid Synthesis ◽  
Process Conditions ◽  
Optimal Process ◽  
Acid Yield ◽  
Platform Chemical

Levulinic acid has been identified as a promising green, biomass derived platform chemical. Since the availability of fossil resources diminishes, the conversion of carbohydrates to Levulinic acid has become increasingly important. ZSM-5 supported SO42-/ZrO2 solid acid catalyst have been applied for the dehydration of glucose to Levulinic acid. With ZSM-5 supported SO42-/ZrO2 solid acid as the catalyst, an optimized Levulinic acid yield was obtained at 180 °C for 2.5 h with 3 g ZSM-5 supported SO42-/ZrO2 catalyst solid acid catalys and the highest Levulinic acid yield was 55.035%.

Conversion of Glucose to Levulinic Acid Using SO42-/TiO2-Al2O3-SnO2 Solid Acid Catalysts

2012 ◽  
Vol 550-553 ◽  
pp. 234-237 ◽  
Author(s):  
Jun Ping Zhuang ◽  
Xue Ping Li ◽  
Ying Liu
Keyword(s):  
Levulinic Acid ◽  
Solid Acid ◽  
Low Cost ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Catalytic Performance ◽  
High Catalytic Activity ◽  
Acid Yield ◽  
Platform Chemicals ◽  
Catalytic Effects

Biomass represents an abundant and relatively low cost carbon resource that can be utilized to produce platform chemicals such as levulinic acid. This study focused on the effect of SO42-/TiO2-Al2O3-SnO2solid acid catalyst on the catalytic performance in levulinic acid production from biomass-derived carbohydrates glucose. The SO42-/TiO2-Al2O3-SnO2solid acid catalyst showed a high catalytic activity for the selective conversion of glucose to levulinic acid. Experimental results showed that SO42-/TiO2-Al2O3-SnO2solid acid had markedly catalytic effects on the conversion of glucose to levulinic acid. With SO42-/TiO2-Al2O3-SnO2solid acid as the catalyst, an optimized ethyl levulinic acid was obtained at 180 °C for 2 h with glucose dosage of 2 wt% and 3 g SO42-/TiO2-Al2O3-SnO2solid acid catalys and the levulinic acid yield was 74.05%.

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