Hydrolysis of cellulose over functionalized glucose-derived carbon catalyst in ionic liquid

Guo, Haixin; Qi, Xinhua; Li, Luyang; Smith, Richard L.

doi:10.1016/j.biortech.2012.03.098

Cited by 130 publications

(69 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Economic improvements have been reported via interventions such as the use of thermophilic cellulase in high solvent concentrations [205]; application of acid catalysts such as sulfonated carbon materials (sugar catalysts) [206], HCl [175,187], and Nafion NR50 [207]; inclusion of chemicals such as NH 4 OH-H 2 O 2 [208] and electrolyte solution [181]; direct (without cellulase) conversion of pretreated substrates to biofuels in consolidated bioprocessing [209]; the reuse of solvent in several batches [169]. Notwithstanding other process enhancements, it is necessary that lignin-derived products are efficiently utilized to improve process economics.…”

Section: Drawbacks and Process Modificationsmentioning

confidence: 99%

Chemical Pretreatment Methods for the Production of Cellulosic Ethanol: Technologies and Innovations

Bensah

Mensah

2013

International Journal of Chemical Engineering

262

104

View full text Add to dashboard Cite

Pretreatment of lignocellulose has received considerable research globally due to its influence on the technical, economic and environmental sustainability of cellulosic ethanol production. Some of the most promising pretreatment methods require the application of chemicals such as acids, alkali, salts, oxidants, and solvents. Thus, advances in research have enabled the development and integration of chemical-based pretreatment into proprietary ethanol production technologies in several pilot and demonstration plants globally, with potential to scale-up to commercial levels. This paper reviews known and emerging chemical pretreatment methods, highlighting recent findings and process innovations developed to offset inherent challenges via a range of interventions, notably, the combination of chemical pretreatment with other methods to improve carbohydrate preservation, reduce formation of degradation products, achieve high sugar yields at mild reaction conditions, reduce solvent loads and enzyme dose, reduce waste generation, and improve recovery of biomass components in pure forms. The use of chemicals such as ionic liquids, NMMO, and sulphite are promising once challenges in solvent recovery are overcome. For developing countries, alkalibased methods are relatively easy to deploy in decentralized, low-tech systems owing to advantages such as the requirement of simple reactors and the ease of operation.

show abstract

Section: Drawbacks and Process Modificationsmentioning

confidence: 99%

Chemical Pretreatment Methods for the Production of Cellulosic Ethanol: Technologies and Innovations

Bensah

Mensah

2013

International Journal of Chemical Engineering

262

104

View full text Add to dashboard Cite

show abstract

“…Recently, a one-step method utilizing carbonization and sulfonation synchronously in an autoclave was used to prepare a strong Brønsted acid catalyst made from glucose and p-toluenesulfonic acid Guo et al 2012). This method not only can simplify the preparation process, but also it can yield a stable active catalyst.…”

Section: Introductionmentioning

confidence: 99%

Hydrolysis of Corncob Using a Modified Carbon-based Solid Acid Catalyst

Xu¹,

Li²,

Zhang³

et al. 2016

BioResources

View full text Add to dashboard Cite

Lignocellulosic biomass is a very important renewable resource that can be used to produce biofuels and various platform chemicals. The conversion of biomass to reducing sugars is an important intermediate step that can impact the economic benefits of the process. Modified carbon-based solid acid is a novel catalyst used in the hydrolysis process of lignocellulosic materials. The catalyst material was prepared through the incomplete carbonization and subsequent sulfonation of a mixture of glucose and p-toluenesulfonic acid, followed by oxidation using 30% H2O2 to promote the acidity. The hydrolysis efficiency of the solid acid catalyst thus prepared was considerably increased. The effects of the carbonization temperature, time, and the glucose/p-toluene-sulfonic acid ratio on catalytic efficiency were investigated in this study. Under the appropriate preparation conditions, the catalyst could hydrolyze corncob to produce 78% xylose. The activity of the catalyst slightly declined after five cycles of application.

show abstract

“…A detailed analysis of the products from different hydrolysis conditions is needed for the full use of hydrolyzed cellulose. Moreover, the ionic liquids are expensive and unrecyclable (Guo et al 2012b). So it makes sense to focus on the hydrolysis of cellulose using CSA in ionic liquids and H2O.…”

Section: Introductionmentioning

confidence: 99%

“…Interesting results were recorded in particular reactions catalyzed by CSA (Guo et al 2012b;Bai et al 2014). Furthermore, the types and contents of chemicals in the hydrolysate should be quantified.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrolysis of microcrystalline cellulose was examined in an ionic liquid ([BMIM]Cl) with a sulfonated carbon catalyst (Dutta et al 2013;Liu et al 2013;Lian et al 2014). Interesting results were recorded in particular reactions catalyzed by CSA (Guo et al 2012b;Bai et al 2014). Furthermore, the types and contents of chemicals in the hydrolysate should be quantified.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Hydrolyzates Produced from Cellulose Catalyzed by Carbonaceous Solid Acid in an Ionic Liquid

Liu

Zhou

et al. 2016

BioResources

View full text Add to dashboard Cite

The hydrolysis of cellulose using carbonaceous solid acid (CSA) in an ionic liquid was studied. The types and concentrations of products generated during the hydrolysis of the cellulose under different conditions, including temperature, reaction time, water addition, and recycle time, were investigated. The CSA prepared in the study contained 1.45 mmol/g of acidic groups, which was higher than the theoretical amount of sulfonic groups. The highest yields of total reducing sugars (TRS) and glucose were obtained at 5% water content, 6 h of reaction time, and 140 °C. The cellulose was hydrolyzed effectively via catalysis of CSA in [AMIM][Cl] with a low water content. Analysis of the products under different conditions in this work provides a strong basis for the full use of hydrolyzed cellulose. Sciences, Guangzhou 510640, China; c: Collaborative Innovation Centre of Biomass Energy, Zhengzhou, 450002, China; *Corresponding author: qiwei@ms.giec.ac.cn Keywords: Carbonaceous solid acid; Hydrolysis; Cellulose; Ionic liquid Contact information: a: State Key laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China; b: Guangzhou Institute of Energy Conversion, Key Laboratory of Renewable Energy, Chinese Academy of INTRODUCTIONBiorefineries, which use raw materials including industrial and agricultural waste, urban garbage, and other environmental benign feedstocks instead of fossil fuels, have been receiving increased attention (Cardoen et al. 2015;Kamm et al. 2016;Papendiek et al. 2016). Biorefineries provide fuels and chemicals for use in transportation and various industries, solving some thorny environmental and energy problems at the same time (O'Callaghan 2016;Sadhukhan et al. 2016).Cellulose usually has the dominant content in the lignocellulosic biomass. It is a highly crystalline polymer (Bai et al. 2014) connected by β-glycosidic linkages (Rinaldi et al. 2008). Suganuma et al. (2008) applied a carbon material bearing SO3H groups to cellulose hydrolysis under hydrothermal conditions, which avoided recovery problems and high energy input of traditional mineral acid catalysts (Namchot et al. 2014). The yields of glucose and β-1,4 glucan were 4% and 64%, respectively, while the yields of the experimental group catalyzed by sulfuric acid were 10% and 38% under the same conditions, respectively. Thus, carbon-based solid acid (CSA) can replace mineral acid as the catalyst for the hydrolysis of cellulose; however, further research is needed to enhance the hydrolysis efficiency and yield of desired products.Glucans consist of more than 30 anhydroglucose units (AGU) and are insoluble in most common solvents (Percival Zhang et al. 2006) (Dutta et al. 2013;Liu et al. 2013;Lian et al. 2014). Interesting results were recorded in particular reactions catalyzed by CSA (Guo et al. 2012b;Bai et al. 2014). Furthermore, the types and contents of chemicals in the hydrolysate should be quantified. There have also been studies producing certain chemicals, especially 5-hydroxymethylfurfural (5-HMF) (Guo...

show abstract

Hydrolysis of cellulose over functionalized glucose-derived carbon catalyst in ionic liquid

Cited by 130 publications

References 29 publications

Chemical Pretreatment Methods for the Production of Cellulosic Ethanol: Technologies and Innovations

Chemical Pretreatment Methods for the Production of Cellulosic Ethanol: Technologies and Innovations

Hydrolysis of Corncob Using a Modified Carbon-based Solid Acid Catalyst

Analysis of Hydrolyzates Produced from Cellulose Catalyzed by Carbonaceous Solid Acid in an Ionic Liquid

Contact Info

Product

Resources

About