Synthesis and Characterization of Organolanthanide Complexes with a Calix[4]-pyrrolyl Ligand and Their Catalytic Activities toward Hydrophosphonylation of Aldehydes and Unactivated Ketones

2012 ◽  
Vol 31 (5) ◽  
pp. 1696-1702 ◽  
Author(s):  
Shuangliu Zhou ◽  
Hengyu Wang ◽  
Jian Ping ◽  
Shaowu Wang ◽  
Lijun Zhang ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Catalytic Activities

Synthesis and Characterization of Ce1−xEuxO2−x/2 Mixed Oxides and Their Catalytic Activities for CO Oxidation

2009 ◽  
Vol 113 (14) ◽  
pp. 5629-5635 ◽  
Author(s):  
Willinton Y. Hernández ◽  
Miguel A. Centeno ◽  
Francisca Romero-Sarria ◽  
Jose A. Odriozola
Keyword(s):  
Co Oxidation ◽  
Mixed Oxides ◽  
Synthesis And Characterization ◽  
Catalytic Activities

Hydrothermal Synthesis and Characterization of Zr-Pillared Montmorillonite for MTO

2012 ◽  
Vol 512-515 ◽  
pp. 2366-2371
Author(s):  
Shu Fang Chen ◽  
Ding Tong Zhong ◽  
Zhao Ni Wei ◽  
Cheng Lin
Keyword(s):  
Zirconium Oxychloride ◽  
Micropore Volume ◽  
Raw Material ◽  
Bet Surface Area ◽  
Synthesis And Characterization ◽  
Catalytic Activities ◽  
Mto Reaction ◽  
Pillared Montmorillonites ◽  
Reaction Result

Zr-pillared Montmorillonites (Zr-PILM) were prepared by the hydrothermal method with montmorillonite as raw material and zirconium oxychloride as Zr source of pillaring agent. The properties of the samples were characterized by XRD,BET, SEM, TEM, XPS. Effects of the synthesizing conditions on the structures of Zr-PILM were investigated. The results indicate that Zr-PILM retains complete layered and sheeting structure, and its BET surface area and micropore volume increases greatly. ZrO2 exists in Zr - PILM layers.The catalytic reaction result of MTO shows that Zr-PILM has high catalytic activities for MTO reaction.

scholarly journals Synthesis and Characterization of Pure and Nano-Ag Impregnated Chitosan Beads and Determination of Catalytic Activities of Nano-Ag

2017 ◽  
Vol 12 (1) ◽  
pp. 127 ◽  
Author(s):  
Zahoor Ahmad ◽  
Maryam Maqsood ◽  
Mazher Mehmood ◽  
Mirza Jameel Ahmad ◽  
Muhammad Aziz Choudhary
Keyword(s):  
Inductively Coupled Plasma ◽  
Synthesis And Characterization ◽  
Ag Nps ◽  
Chitosan Beads ◽  
Catalytic Activities ◽  
Inductively Coupled ◽  
Pore Size Distributions ◽  
Porous Chitosan

<p>The synthesis of nano-Ag impregnated porous Chitosan beads, in crosslinked and uncrosslinked forms, was aimed to investigate their catalytic potential in reducing nitro group into amino by NaBH<sub>4</sub>. The material was found unique concerning the synthesis of well-defined Ag NPs and subsequently adsorbing them on its surface. The crosslinked and uncrosslinked chitosan beads were separately analyzed for the loading of Ag and its effect over the microstructures of the substrate. BET was used to explore the porous nature and pore size distributions of beads. At each stage, SEM coupled with EDX, FT-IR, and inductively coupled plasma (ICP) were employed to characterize the material. The catalytic activities of nano-Ag in crosslinked and uncrosslinked beads were determined by the reduction of 4-Nitrophenol (4-NP) into 4-aminophenol (4-AP) by NaBH<sub>4</sub>; which is least effective for such reduction. The catalytic activities were monitored by UV-Vis spectrophotometer. The results demonstrated the nano-Ag as a reliable and active catalyst which made NaBH<sub>4</sub> quite capable for the nitro reduction. Moreover, the catalytic activities of crosslinked chitosan substrate were found more reproducible as compared to the uncrosslinked substrate. Copyright © 2017 BCREC GROUP. All rights reserved</p><p><em>Received: 7<sup>th</sup> December 2016; Revised: 19<sup>th</sup> December 2016; Accepted: 21<sup>st</sup> December 2016</em></p><p><strong>How to Cite:</strong> Ahmad, Z., Maqsood, M., Mehmood, M., Ahmad, M.J., Choudhary, M.A. (2017). Synthesis and Characterization of Pure and Nano-Ag Impregnated Chitosan Beads and Determination of Catalytic Activities of Nano-Ag. <em>Bulletin of Chemical Reaction Engineering &amp; Catalysis</em>, 12 (1): 127-135 (doi:10.9767/bcrec.12.1.860.127-135)</p><p><strong>Permalink/DOI:</strong> http://dx.doi.org/10.9767/bcrec.12.1.860.127-135</p><p> </p>

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