Institution
National Chemical Laboratory
Facility•Pune, 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.
Topics: Catalysis, Enantioselective synthesis, Nanoparticle, Zeolite, Adsorption
Papers published on a yearly basis
Papers
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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
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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
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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
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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
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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
Name | H-index | Papers | Citations |
---|---|---|---|
Ashok Kumar | 151 | 5654 | 164086 |
Rajesh Kumar | 149 | 4439 | 140830 |
Tak W. Mak | 148 | 807 | 94871 |
John T. O'Brien | 121 | 819 | 63242 |
Clive Ballard | 117 | 736 | 61663 |
Yoshinori Tokura | 117 | 858 | 70258 |
John S. Mattick | 116 | 367 | 64315 |
Michael Dean | 107 | 419 | 63335 |
Ian G. McKeith | 107 | 468 | 51954 |
David J. Burn | 100 | 446 | 39120 |
Anil Kumar | 99 | 2124 | 64825 |
Vikas Kumar | 89 | 859 | 39185 |
Detlef W. Bahnemann | 88 | 517 | 48826 |
Gautam R. Desiraju | 88 | 458 | 45301 |
Praveen Kumar | 88 | 1339 | 35718 |