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4 publications

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    Synthesis, Characterization of Mesoporous Zeolite BEA and Its Application in Multicomponent Reactions

    By Kalpana C. Maheria, Sunil R. Mistry

    Abstract: Strongly acidic mesoporous zeolite beta (MZB or Beta/MCM-41composite) with bimodal pore structure and stepwise distributed acidity has been synthesized by novel route using zeolite BEA as silica-alumina source. The material was characterized by various techniques. Powder XRD showed the existence of well-structured microphase zeolite Beta and mesophase MCM-41 in the composite materials. The performance of the composite material as a catalyst was investigated for the synthesis of various biologically active …

    Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 3, 2014 · pp. 25–45 Read article

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    An Efficient Synthesis of Annulated Novel Dihydropyridine Derivatives using Zeolite H-BEA and Zeolite BEA-SO3H

    By Kalpana C. Maheria, Manoj Kumar K. Rathod, Sunil R. Mistry, Suban K. Sahoo

    Abstract: Modified zeolite (zeolite BEA-SO3H) was synthesized with intent to improve the surface area and Si/Al ratio by loading chlorosulphonic acid onto zeolite H-BEA. Parent and modified zeolite were characterized by variety of characterization techniques such as, ICP, FT-IR, XRD, TGA, NH3-TPD,BET surface area, etc. The catalytic applications of parent and modified zeolite H-BEA were demonstrated through the synthesis of novel quinoline and benzoquinoline substituted dihydropyridines (DHPs) via one pot Hantzsch …

    Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 2, 2014 · pp. 1–12 Read article

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    Sulfated Zirconia Catalyzed Biodiesel Production from Acid Oil Containing High Free Fatty Acids

    By Kalpana C. Maheria, P. R. Acharya, D. R. Lathiya, D. V. Bhatt

    Abstract: Biodiesel fuel has shown great promise as an alternative to petro-diesel fuel. Biodiesel production is widely conducted through esterification and transesterification reaction, catalyzed by homogeneous or heterogeneous catalysts. In the present endeavour, sulphated zirconia has been prepared using microwave method and characterized by using XRD, FT-IR, BET surface area, SEM and acidity measurement. The utility of synthesized catalyst is demonstrated in catalytic biodiesel production from acid oil feed stock. The …

    Published in Journal of Catalyst & Catalysis · Vol. 4, Issue 2, 2017 · pp. 35–45 Read article

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    Green Synthesis of Biologically Active 2, 4, 5- Trisubstituted Imidazoles Catalyzed by Large Pore Zeolite H-BEA through Lophine MCRs

    By Jenifer J. Gabla, Sunil R. Mistry, Kalpana C. Maheria

    Abstract: 2, 4, 5-triphenyl-1(H)-imidazoles (popularly known as Lophine derivatives) are well known heterocyclic compounds and find significant diversified applications, not only in the area of medicinal chemistry as biologically active drug-like molecules, but also in the other advanced research areas, such as fluorescence labelling, biological imaging and chromospheres for non-linear optic system. In the present endeavour, a green synthesis of Lophine derivatives via multi-component reaction is carried out using benzil/benzoin, substituted …

    Published in Journal of Catalyst & Catalysis · Vol. 4, Issue 3, 2017 · pp. 20–36 Read article

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