Ph-SO3H-modified mesoporous carbon as an efficient catalyst for the esterification of oleic acid

Geng, Limin; Yu, Gang; Yu, Weichao; Zhu, Yucheng

doi:10.1016/j.apcata.2012.03.044

Cited by 85 publications

(55 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The preparation of biodiesel using reusable heterogonous acid catalysts is one of the solutions for development of low-waste technologies and cost minimization of biodiesel production process. High strong acid density and suitable textural properties of carbon-based solid acid catalysts (Csac) usually provides promising catalytic activity in esterification reactions of FFA [10][11][12]. Furthermore, the carbon materials or their precursors are low cost feedstock for Csac preparation even more increasing its potential for practical application in biodiesel production processes [9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Esterification of rapeseed oil fatty acids using a carbon-based heterogeneous acid catalyst derived from cellulose

Māliņš¹,

Brinks²,

Kampars³

et al. 2016

Applied Catalysis A: General

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

“…There are two general groups of Csac described in literature -supported [13] and functionalized catalysts. Functionalized Csac can be synthesized in two main ways -direct sulfonation and sulfonation by alkylation or arylation [10,[14][15]. Direct sulfonation of carbon material is the most extensively studied Csac preparation method.…”

Section: Introductionmentioning

confidence: 99%

Esterification of rapeseed oil fatty acids using a carbon-based heterogeneous acid catalyst derived from cellulose

Māliņš¹,

Brinks²,

Kampars³

et al. 2016

Applied Catalysis A: General

View full text Add to dashboard Cite

“…Due to the heterogeneous nature, sulfonated solid acids should have lower TOF values than sulfuric acid, which was commonly observed in many past studies. 46,47 The 2.6 times higher TOF of s-CER/PVA than sulfuric acid suggests that the water less, heterogeneous sulfonate sites are more reactive than water-blocked homogeneous ones.…”

Section: Specific Role Of Pvamentioning

confidence: 99%

Esterification of fatty acids from waste cooking oil to biodiesel over a sulfonated resin/PVA composite

Zhang

Gao

Zhao

et al. 2016

Catal. Sci. Technol.

View full text Add to dashboard Cite

(2016) Esterification of fatty acids from waste cooking oil to biodiesel over a sulfonated resin/PVA composite. Catalysis Science and Technology, 2016 (6). pp. 5590-5598. ISSN 2044-4761 Access from the University of Nottingham repository: http://eprints.nottingham.ac.uk/33644/1/ZhangHL%20Catalysis%20Science %20%26%20Technology%202016%20online.pdf Copyright and reuse:The Nottingham ePrints service makes this work by researchers of the University of Nottingham available open access under the following conditions. This article is made available under the University of Nottingham End User licence and may be reused according to the conditions of the licence. For more details see: http://eprints.nottingham.ac.uk/end_user_agreement.pdf A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. Sulfonated cation exchange resins (s-CER) have been widely studied as a replacement of liquid acids for the catalysis of esterification of free fatty acids (FFAs) to produce biodiesel with water as the only by-product. However, the water produced has strong affinity to sulfonate groups in s-CER, which blocks the reactive sites for esterification and thus reduces the activity of the catalyst. To overcome this technical barrier, we have designed an s-CER/PVA composite by incorporating s-CER fines within a poly (vinyl alcohol) (PVA) matrix. PVA has much stronger absorption preference of water than s-CER and has very low selectivity for the reactants (FFAs and methanol), which enables the continuous removal of the produced water and liberation of reactive sulfonate sites in s-CER for catalysis. With s-CER/PVA, the FFAs conversion was increased from 80.1 % to 97.5 % after 8-hour reaction and the turnover frequency (TOF) was increased more than 3.3 times. The TOF of s-CER/PVA was also 2.6 times of that of sulfuric acid, suggesting that the water less, heterogeneous sulfonate sites are more reactive than water-blocked homogeneous ones. The reusability of the s-CER/PVA was also enhanced due to that the produced water that could cause deactivation of the s-CER was largely removed by PVA.

show abstract

“…Due to the increasing demand for green chemistry and sustainable technology, environmentally benign and easily separable solid acidic catalysts are definitely better choices in the synthesis of HMF. Sulfonated carbon materials derived from renewable biomass, in particular, are receiving growing interest owing to such advantages as widely available and low-cost crude biomass materials, high density of acid sites, mechanical stability, and chemical inertness Geng et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Production of 5-Hydroxymethylfurfural from Fructose Catalyzed by Sulfonated Bamboo-Derived Carbon Prepared by Simultaneous Carbonization and Sulfonation

Shen

Chen

2016

BioResources

View full text Add to dashboard Cite

A novel sulfonated bamboo-derived carbon (SBC) was prepared through a one-pot simultaneous carbonization and sulfonation method using ptoluenesulfonic acid as the sulfonating agent. This method was used in place of the two-step method of high temperature carbonization followed by sulfonation, in order to reduce energy consumption and avoid the use of substantial amounts of strong liquid acid. The as-prepared catalyst bearing SO3H, COOH, and phenolic OH groups demonstrated efficient catalytic activity in the dehydration of fructose to 5-hydroxymethylfurfural (HMF), achieving 92.1% HMF yield in a mixture of tetrahydrofuran (THF) and dimethylsulfoxiden (DMSO) (volume ratio of THF/DMSO 3/7). The mixture had a fructose concentration of 0.08 g·mL -1 with a catalyst amount of 10% weight of fructose at 140 °C in 60 min. No distinct activity drop was observed after the initial deactivation during 5 recycling runs, confirming a good stability of the prepared catalyst. Moreover, kinetic data showed that SBC promoted fructose dehydration to HMF may follow pseudo-first order kinetics with the activation energy of 43.6 kJ·mol -1 under investigated conditions. The convenient catalyst preparation method and excellent catalytic performance of the catalyst provide an easy-handling and ecofriendly strategy for crude biomass utilization in catalyst production.

show abstract

Ph-SO3H-modified mesoporous carbon as an efficient catalyst for the esterification of oleic acid

Cited by 85 publications

References 30 publications

Esterification of rapeseed oil fatty acids using a carbon-based heterogeneous acid catalyst derived from cellulose

Esterification of rapeseed oil fatty acids using a carbon-based heterogeneous acid catalyst derived from cellulose

Esterification of fatty acids from waste cooking oil to biodiesel over a sulfonated resin/PVA composite

Production of 5-Hydroxymethylfurfural from Fructose Catalyzed by Sulfonated Bamboo-Derived Carbon Prepared by Simultaneous Carbonization and Sulfonation

Contact Info

Product

Resources

About