A comparative study of surface acidity in the amorphous, high surface area solids, aluminium fluoride, magnesium fluoride and magnesium fluoride containing iron(III) or aluminium(III) fluorides

2008 ◽  
Vol 129 (5) ◽  
pp. 366-375 ◽  
Author(s):  
Mahmood Nickkho-Amiry ◽  
Gehan Eltanany ◽  
Stefan Wuttke ◽  
Stephan Rüdiger ◽  
Erhard Kemnitz ◽  
...  
Keyword(s):  
Comparative Study ◽  
Surface Area ◽  
Surface Acidity ◽  
High Surface ◽  
High Surface Area ◽  
Magnesium Fluoride ◽  
Aluminium Fluoride

Coupling Sol-Gel Synthesis and Microwave-Assisted Techniques: A New Route from Amorphous to Crystalline High-Surface-Area Aluminium Fluoride

2008 ◽  
Vol 14 (20) ◽  
pp. 6205-6212 ◽  
Author(s):  
Damien Dambournet ◽  
Gehan Eltanamy ◽  
Alexandre Vimont ◽  
Jean-Claude Lavalley ◽  
Jean-Michel Goupil ◽  
...  
Keyword(s):  
Surface Area ◽  
High Surface ◽  
Sol Gel ◽  
High Surface Area ◽  
Microwave Assisted ◽  
Aluminium Fluoride ◽  
Sol Gel Synthesis

Comparative study of three heteropolyacids supported on carbon materials as catalysts for ethylene production from bioethanol

2017 ◽  
Vol 7 (9) ◽  
pp. 1892-1901 ◽  
Author(s):  
M. Almohalla ◽  
I. Rodríguez-Ramos ◽  
A. Guerrero-Ruiz
Keyword(s):  
Activated Carbon ◽  
Comparative Study ◽  
Surface Area ◽  
Diethyl Ether ◽  
Ethylene Production ◽  
Carbon Materials ◽  
High Surface ◽  
High Surface Area

The efficacy of three different heteropolyacids (HPAs) supported on activated carbon (AC) or on high surface area graphite (HSAG), has been comparatively evaluated in the dehydration of bio-ethanol to yield ethylene or diethyl ether.

scholarly journals High-surface-area Magnesium Fluoride: Preparation by Template Method and Catalytic Activity for the Dehydrofluorination of HFC-152a

2018 ◽  
Vol 33 (11) ◽  
pp. 1186
Author(s):  
DING Shan-Shan ◽  
CHEN Xin-Xin ◽  
LI Yu-Zhen ◽  
HAN Wen-Feng ◽  
LV De-Yi ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Magnesium Fluoride ◽  
Template Method ◽  
Hfc 152A

Non-aqueous synthesis of high surface area aluminium fluoride-a mechanistic investigation

2005 ◽  
Vol 15 (5) ◽  
pp. 588-597 ◽  
Author(s):  
Stephan K. Ruediger ◽  
Udo Groß ◽  
Michael Feist ◽  
Hillary A. Prescott ◽  
S. Chandra Shekar ◽  
...  
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Aqueous Synthesis ◽  
Mechanistic Investigation ◽  
Aluminium Fluoride

High surface area mesoporous titanium phosphate: synthesis and surface acidity determination

2000 ◽  
Vol 10 (8) ◽  
pp. 1957-1963 ◽  
Author(s):  
Deborah J. Jones ◽  
G. Aptel ◽  
Markus Brandhorst ◽  
Mélanie Jacquin ◽  
José Jiménez-Jiménez ◽  
...  
Keyword(s):  
Surface Area ◽  
Surface Acidity ◽  
High Surface ◽  
High Surface Area ◽  
Titanium Phosphate

Tenacious Mass Transfer Limitations Drive Catalytic Selectivity during Electrochemical Carbon Dioxide Reduction

2019 ◽  
Author(s):  
Kailun Yang ◽  
Recep Kas ◽  
Wilson A. Smith
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Catalyst Layer ◽  
Active Surface ◽  
Active Surface Area ◽  
High Concentration ◽  
Copper Electrodes ◽  
Surface Enhanced ◽  
Local Current

<p>This study evaluated the performance of the commonly used strong buffer electrolytes, i.e. phosphate buffers, during CO<sub>2</sub> electroreduction in neutral pH conditions by using in-situ surface enhanced infrared absorption spectroscopy (SEIRAS). Unfortunately, the buffers break down a lot faster than anticipated which has serious implications on many studies in the literature such as selectivity and kinetic analysis of the electrocatalysts. Increasing electrolyte concentration, surprisingly, did not extend the potential window of the phosphate buffers due to dramatic increase in hydrogen evolution reaction. Even high concentration phosphate buffers (1 M) break down within the potentials (-1 V vs RHE) where hydrocarbons are formed on copper electrodes. We have extended the discussion to high surface area electrodes by evaluating electrodes composed of copper nanowires. We would like highlight that it is not possible to cope with high local current densities on these high surface area electrodes by using high buffer capacity solutions and the CO<sub>2</sub> electrocatalysts are needed to be evaluated by casting thin nanoparticle films onto inert substrates as commonly employed in fuel cell reactions and up to now scarcely employed in CO<sub>2</sub> electroreduction. In addition, we underscore that normalization of the electrocatalytic activity to the electrochemical active surface area is not the ultimate solution due to concentration gradient along the catalyst layer.This will “underestimate” the activity of high surface electrocatalyst and the degree of underestimation will depend on the thickness, porosity and morphology of the catalyst layer. </p> <p> </p>

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