Correlations for trans-isomer formation during partial hydrogenation of oils and fats

1978 ◽  
Vol 55 (12) ◽  
pp. 865-869 ◽  
Author(s):  
P. S. Puri
Keyword(s):  
Trans Isomer ◽  
Partial Hydrogenation

scholarly journals Low-temperature and atmospheric pressure plasma for palm biodiesel hydrogenation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Grittima Kongprawes ◽  
Doonyapong Wongsawaeng ◽  
Kanokwan Ngaosuwan ◽  
Worapon Kiatkittipong ◽  
Suttichai Assabumrungrat
Keyword(s):  
Fatty Acid ◽  
Cloud Point ◽  
Atmospheric Pressure ◽  
Oxidation Stability ◽  
Acid Methyl Ester ◽  
Energy Utilization ◽  
Superior Performance ◽  
Partial Hydrogenation ◽  
Dbd Plasma ◽  
Plasma Hydrogenation

AbstractPartially hydrogenated fatty acid methyl ester (H-FAME) is conventionally produced through partial hydrogenation under high pressure and elevated temperature in the presence of a catalyst. Herein, a novel green, catalyst-free, non-thermal and atmospheric pressure dielectric barrier discharge (DBD) plasma was employed instead of a conventional method to hydrogenate palm FAME. H-FAME became more saturated with the conversion of C18:2 and C18:3 of 47.4 and 100%, respectively, at 100 W input power, 1 mm gas-filled gap size and 80% H2 in the mixed gas at room temperature for 5 h, causing a reduction of the iodine value from 50.2 to 43.5. Oxidation stability increased from 12.8 to 20 h while a cloud point changed from 13.5 to 16 °C. Interestingly, DBD plasma hydrogenation resulted in no trans-fatty acid formation which provided a positive effect on the cloud point. This green DBD plasma system showed a superior performance to a conventional catalytic reaction. It is an alternative method that is safe from explosion due to the mild operating condition, as well as being highly environmentally friendly by reducing waste and energy utilization from the regeneration process required for a catalytic process. This novel green plasma hydrogenation technique could also be applied to other liquid-based processes.

Regiospezifische Insertion von [SCN]- und [SeCN]- in die S – C- bzw. Se– C-Bindung Übergangsmetall-koordinierter Thietane und SelenetaneRegiospecific Insertion of [SCN]- and [SeCN]- in the S–C- and Se–C-Bond of Transition-Metal-Coordinated Thietanes and Selenetanes

1993 ◽  
Vol 48 (11) ◽  
pp. 1613-1620 ◽  
Author(s):  
Helmut Fischer ◽  
Claudia Kalbas ◽  
Carsten Troll ◽  
Klaus H. Fluck
Keyword(s):  
Nitrogen Atom ◽  
Transition Metal ◽  
Structure Analysis ◽  
Trans Isomer ◽  
X Ray ◽  
Tungsten Complexes ◽  
Membered Heterocycle

Pentacarbonyl(thietane)tungsten complexes react with thiocyanate, [SCN]-, and SiO2/H2O by insertion of the CN group into a S—C bond of the four-membered heterocycle, 1,3-migration of the pentacarbonyltungsten fragment and protonation of the nitrogen atom to give tungsten-coordinated thiazinthione complexes. Analogously, the reactions of a thietane tungsten complex with [SeCN]- and SiO2/H2O affords a thiazinselone complex. A selenazinthione complex is obtained from a selenetane complex and [SCN]- (+ SiO2/H2O). The insertions are regiospecific and stereoselective. The structure of the trans-isomer of a pentacarbonyl-(thiazinthione) complex has been established by X-ray structure analysis.

Partial hydrogenation of a C18:3-rich FAME mixture over Pd/C

2020 ◽  
Vol 157 ◽  
pp. 33-42
Author(s):  
Eugenio Quaranta ◽  
Daniele Cornacchia
Keyword(s):  
Partial Hydrogenation

Ru–Cd/Bentonite for the Partial Hydrogenation of Benzene: A Catalyst without Additives

ChemCatChem ◽  
2012 ◽  
Vol 4 (11) ◽  
pp. 1836-1843 ◽  
Author(s):  
Weitao Wang ◽  
Huizhen Liu ◽  
Guodong Ding ◽  
Peng Zhang ◽  
Tianbin Wu ◽  
...  
Keyword(s):  
Partial Hydrogenation ◽  
Partial Hydrogenation Of Benzene

Synthesis of dl-mesembrine and its trans isomer

1968 ◽  
Vol 9 (52) ◽  
pp. 5445-5448 ◽  
Author(s):  
Tokuro Oh-ishi ◽  
Hiroshi Kugita
Keyword(s):  
Trans Isomer

The Partial Hydrogenation of Difurfuralacetone and Related Compounds

1950 ◽  
Vol 72 (12) ◽  
pp. 5506-5507 ◽  
Author(s):  
Kliem Alexander ◽  
L. S. Hafner ◽  
George H. Smith ◽  
L. E. Schniepp
Keyword(s):  
Partial Hydrogenation ◽  
Related Compounds
Sign in / Sign up

Export Citation Format

Share Document