Characterization of combustion synthesized zirconia powder by UV-vis, IR and other techniques
H. Ranjan Sahu,G. Ranga Rao +1 more
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In this article, fine powders of zirconia were prepared by employing combustion method with varying fuel to pre-cursor molar ratios, and the catalytic activity was probed with transfer hydrogenation reaction in liquid phase.Abstract:
Fine powders of zirconia were prepared by employing combustion method with varying fuel to pre-cursor molar ratios. The zirconia powders contained more amount of monoclinic phase as the fuel content was increased. This aspect was studied using XRD, IR and UV-vis diffuse reflectance techniques. The surface acid-base properties of these samples were also investigated by indicator titration method. The catalytic activity was probed with transfer hydrogenation reaction in liquid phase. It was found that combustion synthesized zirconia did not provide required active sites for transfer hydrogenation reactions in liquid phase unlike hydrous zirconia.read more
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Knoevenagel condensation reaction over acid-base bifunctional nanocrystalline CexZr1-xO2 solid solutions
TL;DR: In this paper, high-temperature stable three-dimensional spongelike mesoporous Ce x Zr 1− x O 2 solid solutions consisting of nanometer size particles with different Ce/Zr compositions were synthesized by a modified sol-gel procedure using a triethanolamine/water mixture as a solvent to be used in liquid Knoevenagel condensation reaction.
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XRD and UV-Vis diffuse reflectance analysis of CeO2-ZrO2 solid solutions synthesized by combustion method
G. Ranga Rao,H. Ranjan Sahu +1 more
TL;DR: A series of ceria-incorporated zirconia (Ce1−xZrxO2,x = 0 to 1) solid solutions were prepared by employing the solution combustion synthesis route as discussed by the authors.
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12-Tungstophosphoric acid anchored to SBA-15: An efficient, environmentally benign reusable catalysts for biodiesel production by esterification of free fatty acids
Varsha Brahmkhatri,Anjali Patel +1 more
TL;DR: In this article, a 12-Tungstophosphoric acid anchored to SBA-15 was synthesized and characterized by various physico-chemical techniques such as TGA, FT-IR, DRS, XRD, N 2 adsorption-desorption, solid state NMR (31 P and 29 Si), SEM and TEM.
Journal ArticleDOI
Template-free synthesis of tetragonal Co-doped ZrO2 nanoparticles for applications in electrochemical energy storage and water treatment
TL;DR: In this paper, a template-free synthesis of pure and Co-doped ZrO2 tetragonal structured nanoparticles was achieved by the hydrothermal method and their photocatalytic, photoelectrocatalytic and electrochemical energy storage supercapacitive properties were investigated for the first time.
Journal ArticleDOI
The effective adsorption of tetracycline onto zirconia nanoparticles synthesized by novel microbial green technology
Banhishikha Debnath,Moumita Majumdar,Mahashweta Bhowmik,Kartick Lal Bhowmik,Animesh Debnath,Dijendra Nath Roy +5 more
TL;DR: The Langmuir isotherm model has been found to be the best fitted model among the all isotherms models indicating the involvement of monolayer uptake of tetracycline on the surface of zirconia nanoparticles, and it is quite reasonable to accept that zirConia nanoparticle may be used as an alternative adsorbent to mitigate the tetrACYcline contamination in wastewater.
References
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Book
CRC Handbook of Chemistry and Physics
TL;DR: CRC handbook of chemistry and physics, CRC Handbook of Chemistry and Physics, CRC handbook as discussed by the authors, CRC Handbook for Chemistry and Physiology, CRC Handbook for Physics,
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Catalytic Properties of Ceria and CeO2-Containing Materials
TL;DR: A survey of the use of cerium oxide and CeO2-containing materials as oxidation and reduction catalysts is presented in this paper, with a special focus on catalytic interaction with small molecules such as hydrogen, carbon monoxide, oxygen, and nitric oxide.
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Use of CeO2-based oxides in the three-way catalysis
TL;DR: In this paper, the use of CeO 2 -based materials in the automotive three-way catalysts (TWCs) is considered, and the multiple roles of COO 2 as a TWC promoter and in particular the oxygen storage/release capacity (OSC) are critically discussed.
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Heterogeneous Basic Catalysis
TL;DR: In contrast to these extensive studies of heterogeneous acidic catalysts, fewer efforts have been given to the study of heterogenous basic catalysts as mentioned in this paper. But these studies have been continuous and progressed steadily, and they have never been reviewed in the chemical Reviews before.
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Sulfated Zirconia-Based Strong Solid-Acid Catalysts: Recent Progress
Xuemin Song,Abdelhamid Sayari +1 more
TL;DR: In this paper, a review article deals with recent progress in the preparation of sulfated zirconia (SZ)-bassed, strong solid-acid catalysts, the characterization of their physicochemical properties and the evaluation of their catalytic performance in various promising applications.