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Institution

National Chemical Laboratory

FacilityPune, Maharashtra, India
About: National Chemical Laboratory is a facility organization based out in Pune, Maharashtra, India. It is known for research contribution in the topics: Catalysis & Enantioselective synthesis. The organization has 8891 authors who have published 14837 publications receiving 387600 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, an integrated reaction engineering based mathematical model for clinker formation in cement industry is presented, where separate models for pre-heater, calciner, rotary kiln and cooler are initially developed and coupled together to build an integrated simulator.

105 citations

Journal ArticleDOI
TL;DR: In this paper, the authors showed that the type of alkaline earth substituted at the A site of the perovskite oxide plays an important role in terms of structure, basicity, oxygen deficiency and Ni dispersion.
Abstract: Dry reforming of methane is an important process for the utilization of CO2 and to get valuable synthesis gas. Alkaline earth metal substituted MZr1-xNixO3-δ perovskites were synthesized by citrate gel method, characterized and evaluated for dry reforming methane. Characterization results show that the type of alkaline earth substituted at the A site of the perovskite oxide plays an important role in terms of structure, basicity, oxygen deficiency and Ni dispersion. Calcium substituted CaZr0.8Ni0.2O3-δ catalyst shows superior activity in terms of high CH4 and CO2 conversion, while maintaining the activity even after 500 h of reaction. Mechanistic investigations were carried out using transient pulse experiments and insitu FTIR-diffuse reflectance spectroscopy. These experiments reveal that redox property and basicity play important role in activation and sustaining the reforming reaction. Insitu FTIR measurements show that surface hydroxyl groups of the support are vital for high activity and durability of CaZr0.8Ni0.2O3-δ catalyst. XRD and TGA analysis of catalysts after reaction show the structures are retained, but peaks pertaining to coke were observed on SrZr0.8Ni0.2O3-δ and BaZr0.8Ni0.2O3-δ catalysts. On the otherhand, CaZr0.8Ni0.2O3-δ catalyst had only amorphous carbon even after 500 h of reaction. HRTEM studies revealed that SrZr0.8Ni0.2O3-δ and BaZr0.8Ni0.2O3-δ catalysts deactivated mostly due to the formation of carbon nanotubes with Ni embedded in them. Raman and XPS analysis helped in identifying types of coke precursors present on the catalysts. The investigation also illustrate that type of carbon formed depends on the basicity of perovskite oxide, metal to support interaction, Ni crystallite size, surface hydroxyl groups and oxygen defects. This study clearly demonstrated that CaZr0.8Ni0.2O3-δ is an excellent catalyst for dry reforming reaction with long life.

105 citations

Journal ArticleDOI
TL;DR: In this article, a thermodynamic analysis of the nonstoichiometry at La site in LaMnO 3 plays an important role on the reaction, and it was found that diffusion of Mn into YSZ leads to increase of La activity at the interface and promotes the reaction.

105 citations

Journal ArticleDOI
TL;DR: Glycolyse par l'ethylene-, le propene-and le diethyleneglycol de dechets de PET and polyesterification by l'acide adipique des diols oligomeres obtenus dans les conditions des procedes commerciaux, avec 2 plateaux de temperature as mentioned in this paper.
Abstract: Glycolyse par l'ethylene-, le propene- et le diethyleneglycol de dechets de PET et polyesterification par l'acide adipique des diols oligomeres obtenus dans les conditions des procedes commerciaux, avec 2 plateaux de temperature. La vitesse de la polyesterification du diol obtenu avec l'ethyleneglycol est la plus elevee

105 citations

Journal ArticleDOI
TL;DR: A unique example of an ESIPT coupled AIEE process, associated with a single molecule (1), is utilized for generating multiple luminescent colors (blue-green-white-yellow) because of the J-aggregated state of 1.

105 citations


Authors

Showing all 8913 results

NameH-indexPapersCitations
Ashok Kumar1515654164086
Rajesh Kumar1494439140830
Tak W. Mak14880794871
John T. O'Brien12181963242
Clive Ballard11773661663
Yoshinori Tokura11785870258
John S. Mattick11636764315
Michael Dean10741963335
Ian G. McKeith10746851954
David J. Burn10044639120
Anil Kumar99212464825
Vikas Kumar8985939185
Detlef W. Bahnemann8851748826
Gautam R. Desiraju8845845301
Praveen Kumar88133935718
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20236
202238
2021482
2020454
2019471
2018498