Novel Application of a Solid Super Acid, Sulfated Zirconia, as a Catalyst for Koch Carbonylation Reaction

2000 ◽  
Vol 29 (2) ◽  
pp. 136-137 ◽  
Author(s):  
Hajime Mori ◽  
Aya Wada ◽  
Qiang Xu ◽  
Yoshie Souma
Keyword(s):  
Sulfated Zirconia ◽  
Carbonylation Reaction ◽  
Super Acid ◽  
Koch Carbonylation

Reusability Study of Sulfated Zirconia Functionalized SBA-15 Catalyst for Biolubricant Oil Production from Oleic Acid

2019 ◽  
Vol 1 (1) ◽  
pp. 46
Author(s):  
F R Rangganita ◽  
L Hermida ◽  
A Angraeni ◽  
D Khoirunnisa
Keyword(s):  
Oleic Acid ◽  
Sulfated Zirconia ◽  
Room Temperature ◽  
Oil Production ◽  
Catalyst Reusability

Sulfated zirconia functionalized SBA-15 catalsyt (SZr-SBA-15) was prepared byreacting SBA-15 with Zirkoniumoxychloride and urea at 90oC to form ZrO2-SBA-15. Then, ZrO2-SBA-15 was reacted with H2SO4 at room temperature to produceSZr-SBA-15 catalsyt.. The catalyst was characterized in terms of adsorptiondesorption nitrogen analysis, SEM-EDX and FTIR. Based on SEM-EDX andadsorption-desorption nitrogen analysis results, it was found that Zr had beenincorporated in SBA-15. By using the SZr-SBA-15 catalyst, esterification reactionof oleic acid with TMP to produce biolubricant oil of Trimethylolpropanetrioleatachieved 85% oleic acid conversion and selectivity of 63,7%. Reusability study ofSZr-SBA-15 catalyst was carried out for 3 rounds of reaction. It was found that thecatalyst could be used up to 3 rounds without significant decrease in activityKeywords: biolubricant oil, catalyst reusability, sba-15, sulfated zirconia.

Palladium-catalyzed carbonylation of 1,5-cyclooctadiene. Effects of temperature and pressure

1991 ◽  
Vol 56 (3) ◽  
pp. 663-672 ◽  
Author(s):  
Curtis B. Anderson ◽  
Rade Marković
Keyword(s):  
Carbon Monoxide ◽  
Oxidative Carbonylation ◽  
Influence Of Temperature ◽  
Carbonylation Reaction ◽  
Palladium Catalyzed ◽  
Effects Of Temperature ◽  
Temperature And Pressure

The influence of temperature and carbon monoxide pressure on the course of oxidative carbonylation reaction of 1,5-cyclooctadiene in the presence of the palladium(II) salts as a catalyst, was investigated.

The modifying effect of gallium on the properties of palladium catalysts based on sulfated zirconia

2020 ◽  
Author(s):  
O. E. Bugay ◽  
O. V. Dzhikiya ◽  
M. D. Smolikov ◽  
I. V. Muromtsev ◽  
A. S. Belyi
Keyword(s):  
Sulfated Zirconia ◽  
Palladium Catalysts ◽  
Modifying Effect

scholarly journals Overcoming the water oxidative limit for ultra-high-workfunction hole-doped polymers

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Qi-Mian Koh ◽  
Cindy Guanyu Tang ◽  
Mervin Chun-Yi Ang ◽  
Kim-Kian Choo ◽  
Qiu-Jing Seah ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Water Oxidation ◽  
Soft Materials ◽  
Bulk Water ◽  
Oxidation Potential ◽  
Doped Semiconductors ◽  
Good Thermal Stability ◽  
Doped Polymers ◽  
Super Acid ◽  
Maximum Work

AbstractIt is widely thought that the water-oxidation reaction limits the maximum work function to about 5.25 eV for hole-doped semiconductors exposed to the ambient, constrained by the oxidation potential of air-saturated water. Here, we show that polymer organic semiconductors, when hole-doped, can show work functions up to 5.9 eV, and yet remain stable in the ambient. We further show that de-doping of the polymer is not determined by the oxidation of bulk water, as previously thought, due to its general absence, but by the counter-balancing anion and its ubiquitously hydrated complexes. The effective donor levels of these species, representing the edge of the ‘chemical’ density of states, can be depressed to about 6.0 eV below vacuum level. This can be achieved by raising the oxidation potential for hydronium generation, using large super-acid anions that are themselves also stable against oxidation. In this way, we demonstrate that poly(fluorene-alt-triarylamine) derivatives with tethered perfluoroalkyl-sulfonylimidosulfonyl anions can provide ambient solution-processability directly in the ultrahigh-workfunction hole-doped state to give films with good thermal stability. These results lay the path for design of soft materials for battery, bio-electronic and thermoelectric applications.

Esterification of succinic acid using sulfated zirconia supported on SBA‐15

2021 ◽  
Author(s):  
Federico L. Aguzín ◽  
María L. Martínez ◽  
Andrea R. Beltramone ◽  
Cristina L. Padró ◽  
Nora B. Okulik
Keyword(s):  
Succinic Acid ◽  
Sulfated Zirconia
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