Literature DB >> 19153974

Pseudo-bridging silanols as versatile Brønsted acid sites of amorphous aluminosilicate surfaces.

Céline Chizallet1, Pascal Raybaud.   

Abstract

Amorphization tunes acidity: Pseudo-bridging silanols, suggested as versatile Brønsted acid groups by molecular modeling studies, are obtained by shifted hydrolysis of Si-O-Al bridges formed by the thermal treatment of silica deposited on gamma-Al(2)O(3) (100), and appear under given pretreatment conditions. Demixing of part of the silica from the aluminosilicate phase is predicted upon excess water adsorption.

Entities:  

Year:  2009        PMID： 19153974     DOI： 10.1002/anie.200804580

Source DB:  PubMed          Journal:  Angew Chem Int Ed Engl        ISSN： 1433-7851            Impact factor:   15.336


  9 in total

1.  Reduction of Acute Inflammatory Effects of Fumed Silica Nanoparticles in the Lung by Adjusting Silanol Display through Calcination and Metal Doping.

Authors:  Bingbing Sun; Suman Pokhrel; Darren R Dunphy; Haiyuan Zhang; Zhaoxia Ji; Xiang Wang; Meiying Wang; Yu-Pei Liao; Chong Hyun Chang; Juyao Dong; Ruibin Li; Lutz Mädler; C Jeffrey Brinker; André E Nel; Tian Xia
Journal:  ACS Nano       Date:  2015-07-29       Impact factor: 15.881

2.  Revealing Brønsted Acidic Bridging SiOHAl Groups on Amorphous Silica-Alumina by Ultrahigh Field Solid-State NMR.

Authors:  Zichun Wang; Kuizhi Chen; Yijiao Jiang; Julien Trébosc; Wenjie Yang; Jean-Paul Amoureux; Ivan Hung; Zhehong Gan; Alfons Baiker; Olivier Lafon; Jun Huang
Journal:  J Phys Chem Lett       Date:  2021-11-22       Impact factor: 6.888

3.  Facile continuous process for gas phase halogen exchange over supported alkyl phosphonium salts.

Authors:  Priti Sharma; Yoel Sasson
Journal:  RSC Adv       Date:  2018-01-12       Impact factor: 3.361

4.  Cytotoxicity and physicochemical characterization of iron-manganese-doped sulfated zirconia nanoparticles.

Authors:  Mohamed Qasim Al-Fahdawi; Abdullah Rasedee; Mothanna Sadiq Al-Qubaisi; Fatah H Alhassan; Rozita Rosli; Mohamed Ezzat El Zowalaty; Seïf-Eddine Naadja; Thomas J Webster; Yun Hin Taufiq-Yap
Journal:  Int J Nanomedicine       Date:  2015-09-10

5.  Physicochemical properties, cytotoxicity, and antimicrobial activity of sulphated zirconia nanoparticles.

Authors:  Ae Mftah; Fatah H Alhassan; Mothanna Sadiq Al-Qubaisi; Mohamed Ezzat El Zowalaty; Thomas J Webster; Mohammed Sh-Eldin; Abdullah Rasedee; Yun Hin Taufiq-Yap; Shah Samiur Rashid
Journal:  Int J Nanomedicine       Date:  2015-01-19

6.  Brønsted acid sites based on penta-coordinated aluminum species.

Authors:  Zichun Wang; Yijiao Jiang; Olivier Lafon; Julien Trébosc; Kyung Duk Kim; Catherine Stampfl; Alfons Baiker; Jean-Paul Amoureux; Jun Huang
Journal:  Nat Commun       Date:  2016-12-15       Impact factor: 14.919

7.  Determining the Surface Structure of Silicated Alumina Catalysts via Isotopic Enrichment and Dynamic Nuclear Polarization Surface-Enhanced NMR Spectroscopy.

Authors:  Andrew G M Rankin; Paul B Webb; Daniel M Dawson; Jasmine Viger-Gravel; Brennan J Walder; Lyndon Emsley; Sharon E Ashbrook
Journal:  J Phys Chem C Nanomater Interfaces       Date:  2017-09-27       Impact factor: 4.126

8.  Atomic Description of the Interface between Silica and Alumina in Aluminosilicates through Dynamic Nuclear Polarization Surface-Enhanced NMR Spectroscopy and First-Principles Calculations.

Authors:  Maxence Valla; Aaron J Rossini; Maxime Caillot; Céline Chizallet; Pascal Raybaud; Mathieu Digne; Alexandra Chaumonnot; Anne Lesage; Lyndon Emsley; Jeroen A van Bokhoven; Christophe Copéret
Journal:  J Am Chem Soc       Date:  2015-08-17       Impact factor: 15.419

9.  IR and NMR Studies of the Status of Al and Acid Sites in Desilicated Zeolite Y.

Authors:  Mariusz Gackowski; Jerzy Podobiński; Ewa Broclawik; Jerzy Datka
Journal:  Molecules       Date:  2019-12-20       Impact factor: 4.411
  9 in total

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