Synthesis and characterization of novel solid base catalyst from fly ash

Jain, Deepti; Khatri, Chitralekha; Rani, Ashu

doi:10.1016/j.fuel.2010.09.025

Cited by 55 publications

(28 citation statements)

References 21 publications

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“…Considering the 13 emerging trend for the development of an environmental benign 14 processes or sustainable technologies for the chemical industry, 15 the adverse effects of homogeneous catalysts in particular liquid 16 bases such as the difficulties in the separation, recovery, and their 17 reusability can be overcome by the use of heterogeneous solid 18 bases [1,2]. The heterogeneous catalysis resulted in the improved 19 performance in terms of remarkable selectivity and product yield 20 by the suppression of the side reactions including self-condensa- 21 tion and oligomerization, and additionally beneficial economic 22…”

mentioning

confidence: 99%

Hierarchical K/LTL zeolites: Synthesis by alkali treatment, characterization and catalytic performance in Knoevenagel condensation reaction

Tangale

Sonar

Niphadkar

et al. 2016

Journal of Industrial and Engineering Chemistry

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mentioning

confidence: 99%

Hierarchical K/LTL zeolites: Synthesis by alkali treatment, characterization and catalytic performance in Knoevenagel condensation reaction

Tangale

Sonar

Niphadkar

et al. 2016

Journal of Industrial and Engineering Chemistry

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“…The peak located at 2000 cm −1 represents the DMD (double‐metal) Fe―Ni vibration and stretching vibration at 463.29 and 479.64 cm −1 represent Ni―O . Asymmetric stretching vibration at 996.87 cm −1 of X―O (X = Si, Al) bonds, and peaks at 1098.25 cm −1 representing Si―O―Si detected for FA corroborate well with previous findings . The peak at 1643.83 cm −1 is ascribed to the vibration of O―H stretching ( δ O − H ) present in FA, and weak band of OH − ions is located around 2343.66 cm −1 …”

Section: Resultsmentioning

confidence: 99%

“…Solid heterogeneous catalysts were prepared using FA as a support by several research groups. In Knoevenagel condensation reaction, FA supported calcium oxide base catalyst was employed; while, other FA supported metallic acid and base catalysts were synthesized and characterized for different reactions . In transesterification of soybean oil and sunflower oil, FA based catalysts were used.…”

Section: Introductionmentioning

confidence: 99%

Fly ash supported Ni―Fe solid acid catalyst for efficient production of diesel additive: intensification through far‐infrared radiation

Pradhan

Chakraborty

2015

Asia-Pacific J Chem Eng

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Novel Ni-Fe solid acid catalyst was prepared through co-wet impregnation of Fe 2 (SO 4 ) 3 ·H 2 O and Ni (NO 3 ) 2 ·6H 2 O on fly ash (FA) support. XRD, BET-BJH, SEM-EDX, XPS and FTIR methods were employed to characterize the catalyst. The excellent catalyst activity was assessed and optimized in the production of methyl oleate (biodiesel/dieseladditive). The response surface methodology (RSM) computed optimal parametric values pertaining to maximum oleic acid (OA) conversion (98.37 ± 0.01%) were 15:1 methanol/OA molar ratio, 1:15:2 nickel nitrate: ferric sulphate:FA (wt. ratio) and 4 wt.% (of OA) catalyst concentration in 1 h under conventional heating at mild reaction temperature (60°C). The optimal catalyst possessed 27.64 m 2 /g specific surface area and 0.0233 cc/g pore volume with predominantly mesoporous framework. XPS bands confirmed the presence of Fe 3+ and mixed Ni 2+ /Ni 3+ species rendering an acidity of 5.5 mmol KOH/g. The catalyst comprised of crystalline Fe 2 O 3 , Ni 2 O 3 and NiS phases as revealed from XRD analysis. This study also reports the remarkable intensification of esterification reaction through an energy-efficient application of far-infrared radiation protocol (1/3 rd of conventional power requirement) resulting 99.20% OA conversion in only 10 min at the derived optimal conditions.

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“…Fly ash, which is the waste material generated from coal‐fired power plants, was used as the source of silica and alumina for solid acid catalysts . Fly ash is of several characteristics including a high content of rich in SiO 2 and Al 2 O 3 , porosity, and specific surface area, which shows great potential in the field of catalytic application.…”

Section: Industrial Solid Wastesmentioning

confidence: 99%

Application of industrial solid wastes in catalytic pyrolysis

Qiu

Deng

Zhang

et al. 2017

Asia-Pacific J Chem Eng

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The catalytic pyrolysis is one of the thermochemical patterns for producing chemical products consisting of solid char, liquid oil, and pyrolytic gas. A number of parameters affecting the catalytic pyrolysis process, yields, and properties of products such as the temperature, residence time, heating rate, feedstock type, and the use of catalyst were evaluated in details to promote the process of catalytic pyrolysis. Catalytic pyrolysis has emerged with the use of a catalyst such as red mud, fly ash, copper slag, blast furnace slag, coal gangue, and aluminum dross. In this paper, a brief discussion with recent development on industrial solid wastes as a catalyst in catalytic pyrolysis process is presented.In the process, the liquid oil is of higher quality; in addition, process by-products such as solid char can be used as an adsorbent material, while the quality of pyrolysis gases is improved. Despite all the potential advantages with industrial solid wastes as a catalyst, some limitations such as less reuse of catalyst and high parasitic energy demand are still remaining. The recommended measurements for these challenges include exploration of suitable reactor, catalyst regeneration, and catalytic mechanism optimization.

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Synthesis and characterization of novel solid base catalyst from fly ash

Cited by 55 publications

References 21 publications

Hierarchical K/LTL zeolites: Synthesis by alkali treatment, characterization and catalytic performance in Knoevenagel condensation reaction

Hierarchical K/LTL zeolites: Synthesis by alkali treatment, characterization and catalytic performance in Knoevenagel condensation reaction

Fly ash supported Ni―Fe solid acid catalyst for efficient production of diesel additive: intensification through far‐infrared radiation

Application of industrial solid wastes in catalytic pyrolysis

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