Preparation of mesoporous silica supported sulfonic acid and evaluation of the catalyst in esterification reactions

Wang, Yi; You, Jing; Liu, Bo

doi:10.1007/s11144-019-01645-2

Cited by 11 publications

(4 citation statements)

References 33 publications

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“…[ 8 ] As a homogeneous reaction catalyst, inorganic acids have good catalytic activity and could lower the cost. [ 9 ] However, there are many disadvantages of this traditional method: first, the strong corrodibility of inorganic acids increased the equipment cost and complexity [ 10 ] ; second, removing liquid inorganic acids from liquid waste is costly and complicated, which can cause environmental and health problems. [ 11 ] Therefore, researchers should urgently develop and apply clean catalytic technology in green conditions.…”

Section: Introductionmentioning

confidence: 99%

“…[8] As a homogeneous reaction catalyst, inorganic acids have good catalytic activity and could lower the cost. [9] However, there are many disadvantages of this traditional method: first, the strong corrodibility of inorganic acids increased the equipment cost and complexity [10] ; second, removing liquid inorganic acids Ping Xie and Tianhao Zhong contributed to the work equally and should be regarded as co-first authors. from liquid waste is costly and complicated, which can cause environmental and health problems.…”

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confidence: 99%

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Structural modulation of ionic liquids as efficient catalysts for esterification reaction

Xie,

Zhong,

et al. 2024

Can J Chem Eng

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There is an urgent need to develop green catalytic transesterification technology to reduce liquid waste and instrument corrosion. Ionic liquids with controlled activity, easy recovery, and corrosion resistance have great potential as catalysts for transesterification reactions. In this paper, a series of ionic liquids were prepared using imidazole and ammonium compounds as cations, and sulphuric acid, p‐toluenesulfonate, and bistrifluoromethanesulfonate anions as anions. In comparison, the ionic liquid made from imidazole with H2SO4 (IMIHS) was found to be the best catalyst for the esterification reaction with high speed, high activity, low corrosion, and high stability, and its catalytic performance was superior to that of sulphuric acid. The optimum reaction conditions were as follows: the molar ratio of ethanol to acetic acid was 1:1, the catalyst amount was 5 wt.%, the reaction temperature was 80°C, and the reaction time was 120 min. The maximum yield of ethyl acetate was 66.2% under the optimum reaction conditions. The catalytic activity was not declined obviously by reusing six times. The activation energy of the reaction is 48.748 kJ/mol.

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Section: Introductionmentioning

confidence: 99%

“…[8] As a homogeneous reaction catalyst, inorganic acids have good catalytic activity and could lower the cost. [9] However, there are many disadvantages of this traditional method: first, the strong corrodibility of inorganic acids increased the equipment cost and complexity [10] ; second, removing liquid inorganic acids Ping Xie and Tianhao Zhong contributed to the work equally and should be regarded as co-first authors. from liquid waste is costly and complicated, which can cause environmental and health problems.…”

mentioning

confidence: 99%

Structural modulation of ionic liquids as efficient catalysts for esterification reaction

Xie,

Zhong,

et al. 2024

Can J Chem Eng

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“…The results revealed that high conversion levels (ranging from 85% to almost 100%) can be achieved by adjusting the amount of Brønsted acid groups grafted on the surface of mesoporous silicas [15]. Nonetheless, this class of hybrid mesoporous catalysts may suffer from low stability due to leaching of functional groups, leading to an irreversible catalyst deactivation despite some controversial reports [16,17].…”

Section: Introductionmentioning

confidence: 99%

Balance between Catalyst Acidity and Hydrophilicity in Biofuel Production from Fatty Acid Esterification over Al-SBA-15

et al. 2023

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A collection of Al-SBA-15 mesoporous catalysts (Si/Al = 13–174) was investigated to overcome typical accessibility constraints of microporous solids. 27Al MAS NMR confirmed the existence of tetrahedrally coordinated Al in the catalyst’s framework, and the fraction of such species increased as the Si/Al ratio decreased. Brønsted acidity followed the same pattern found using n-propylamine thermodecomposition. Mesoporous catalysts with lower Si/Al ratios exhibited a higher affinity to water as quantitatively determined using water adsorption experiments. Those surface properties were correlated to the catalytic performance on oleic acid esterification. The introduction of Al into the SBA-15 framework significantly improved esterification activity, leading to conversions ranging from 70 to 93%. This was explained by the acidity engendered upon Si substitution by Al. However, a turning point from which activity started dropping was registered and it was proposed to be associated with catalyst hydrophilicity. The balance between acidity and hydrophilicity was unveiled to be of paramount importance to accomplish the best catalytic efficiency and uppermost biofuel yield. Catalyst activity was also assessed for the esterification of stearic and linoleic acids. Higher conversion rates were accomplished with unsaturated fatty acids (oleic acid > linoleic acid > stearic acid) due to the higher reactivity of the carboxylic acid moieties as a consequence of the polarity of the double bonds in the carbon chain.

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“…In particular, surface modification is an interesting feature of these materials for improving their catalytic performance [1,2]. Accordingly, functionalized ordered mesoporous materials with covalently bound sulfonic acid have attracted a great amount of attention as an appropriate solid acid catalyst [3,4].…”

Section: Introductionmentioning

confidence: 99%

ompg-C3N4/SO3H organocatalyst-mediated green synthesis of 1,2-dihydro-1-arylnaphtho[1,2-e][1,3] oxazin-3-ones under solvent-free and mild conditions: a fast and facile one-pot three-component approach

2020

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In this research, we have described the synthesis of the well-ordered mesoporous graphite carbon nitride (ompg-C 3 N 4 ) by applying SBA-15 as a potential hard silica template, and the catalytic performance of sulfonated well-ordered mesoporous graphite carbon nitride (ompg-C 3 N 4 /SO 3 H) as an environment-friendly and efficient polymeric solid acid catalyst was investigated in the one-pot preparation of 1,2-dihydro-1-arylnaphtho[1,2-e][1,3]oxazin-3-ones. This cyclocondensation reaction was performed in the presence of various substituted aldehydes, urea, and 2-naphthol through mild and efficient solvent-free method. The structure and morphology of ompg-C 3 N 4 /SO 3 H were characterized using various instrumental analysis methods including FT-IR, EDS, FESEM, TEM, TGA, DTG, XRD, and BET. The simplicity of the process, low reaction times, simple workup, high to quantitative yields, avoiding the utilization of organic solvents, and reusability of the as-prepared catalyst are several prominent advantages of this present synthetic method.

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Preparation of mesoporous silica supported sulfonic acid and evaluation of the catalyst in esterification reactions

Cited by 11 publications

References 33 publications

Structural modulation of ionic liquids as efficient catalysts for esterification reaction

Structural modulation of ionic liquids as efficient catalysts for esterification reaction

Balance between Catalyst Acidity and Hydrophilicity in Biofuel Production from Fatty Acid Esterification over Al-SBA-15

ompg-C3N4/SO3H organocatalyst-mediated green synthesis of 1,2-dihydro-1-arylnaphtho[1,2-e][1,3] oxazin-3-ones under solvent-free and mild conditions: a fast and facile one-pot three-component approach

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