@article {48012,
	title = {Effect of B site substitution in Gd2B2-xNiyO7-delta (B= Ti, Zr) ternary metal oxide catalysts in dry reforming of methane},
	journal = {Molecular Catalysis},
	volume = {522},
	year = {2022},
	month = {APR},
	pages = {112242},
	type = {Article},
	abstract = {<p>
	Structured catalysts are emerging as active and durable catalysts in dry reforming of methane due to their inherent characteristics like lattice insertion of active metals and consequent stability imparted. Here we report Ti and Zr substituted Gd2B2-xNiyO7-delta (B = Ti, Zr) catalysts synthesized by citrate gel method, which are characterized and tested for dry reforming of methane. Structure and Ni substitution has been confirmed by Rietveld refinement of powder XRD patterns and Raman analysis. TPR and CO2-TPD were performed to analyze the reducibility and effect of basic sites of catalysts in DRM activity. Ni doped Ti analogue shows stable and superior activity towards dry reforming of methane for 100 h. The in situ IR studies and XPS analysis confirmed the presence of surface hydroxyl species in this catalyst, which triggers the activation of CO2 and provides higher and durable activity in dry reforming reaction. Absence of any C formation in this catalyst after durability test indicates the mechanism of C gasification by the surface hydroxyl species enhancing stable activity for long durations.</p>
},
	keywords = {A(2)B(2)O(7), Citrate gel method, Dry reforming of methane, Ternary metal oxide},
	issn = {2468-8231},
	doi = {10.1016/j.mcat.2022.112242},
	author = {Ghodke, Seema R. and Thundiyil, Shibin and Dongapure, Pavan and Devi, R. Nandini}
}
@article {49014,
	title = {Experimental and kinetic modelling studies for the design of fixed bed methanol reactor over CuZA catalyst},
	journal = {Chemical Engineering Research Design },
	volume = {205},
	year = {2024},
	month = {MAY},
	pages = {79-90},
	type = {Article},
	abstract = {<p>
	Direct conversion of CO 2 via hydrogenation to value-added chemicals is a vital approach for utilising CO 2 emitted into the atmosphere. In this paper, a critical analysis of reaction kinetic modelling studies is explored in a fixed bed reactor to improve methanol yield for different H 2 to CO 2 ratios by simulating a lab-scale reactor for adiabatic and isothermal conditions. The feed inlet temperature and pressure variations are applied to study the effect of both configurations on methanol production. The results show that the isothermal configuration yields 2.76\% more methanol yield compared to the adiabatic reactor. The effect of H 2 to CO 2 molar ratios of 3, 6 and 9 on the performance of the catalyst and the influence of CO and CO 2 hydrogenation is investigated with model simulations. The overall methanol yield is increased from 19.03\% to 36.41\% with increase in H 2 to CO 2 molar ratio from 3 to 9. Experiments are performed using commercial copper-based catalyst for different temperatures of 210, 230 and 250 degrees C at a pressure of 40 bar for H 2 /CO 2 of 3 and GHSV of 720 h -1 as well as at optimal temperature of 250 degrees C and 50 bar with varying H 2 /CO 2 of 3, 6, 9 for 3 g and 6 g catalyst. The maximum methanol yield of 2.53\% and space time yield of 13.59 mg/g cat .h is obtained at H 2 /CO 2 ratio of 9.</p>
},
	keywords = {CO2 conversion, CuZA catalyst, H2 toCO2 molar ratio, Kinetic modelling, Methanol},
	issn = {0263-8762},
	doi = {10.1016/j.cherd.2024.03.032},
	author = {Bagwan, Farahanaz M. and Dongapure, Pavan and Kulkarni, Amol A. and Vasireddy, Satyam Naidu}
}
