Results 21 to 30 of about 167 (134)

Catalytic acetalization of glycerol waste over alkali-treated natural clinoptilolite

Results in Chemistry, 2022
One of the most potential byproducts of transesterification that has been produced in a large amount is glycerol. Converting glycerol into Solketal via catalytic acetalization using natural zeolites is an interesting route to improve its economic value ...
Teguh Kurniawan, N. Nuryoto, Nava Syahbana Fitri, Hilma Siti Sofiyah, Muhammad Roil Bilad, Kajornsak Faungnawakij, Sutarat Thongratkaew   +6 more
doaj   +1 more source

Using reactive distillation for upgrading bio-oil from co-pyrolysis of palm kernel shell and palm empty fruit bunches [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2021
Due to the poor physical properties of raw bio-oil from pyrolysis, in this work reactive distillation was used to upgrade vaporized bio-oil from selected co-pyrolysis of palm kernel shell and palm empty fruit bunches at 75%/25% mixing ratio by using 10%
Phonsan Saetiao, Sukritthira Rattanawilai, Songtham Photaworn, Kulchanat Prasertsit   +3 more
doaj   +1 more source

Tropylium Ion, an Intriguing Moiety in Organic Chemistry

Molecules, 2023
The tropylium ion is a non-benzenoid aromatic species that works as a catalyst. This chemical entity brings about a large number of organic transformations, such as hydroboration reactions, ring contraction, the trapping of enolates, oxidative ...
Fatima Tuz Zahra, Aamer Saeed, Khansa Mumtaz, Fernando Albericio   +3 more
doaj   +1 more source

Acetate Metabolism and the Inhibition of Bacterial Growth by Acetate [PDF]

Journal of Bacteriology, 2019
High concentrations of organic acids such as acetate inhibit growth of Escherichia coli and other bacteria. This phenomenon is of interest for understanding bacterial physiology but is also of practical relevance. Growth inhibition by organic acids underlies food preservation and causes problems during high-density ...
Pinhal, Stéphane, Ropers, Delphine, Geiselmann, Johannes, de Jong, Hidde   +3 more
openaire   +4 more sources

Heteropolyacid supported on ionic liquid decorated hierarchical faujasite zeolite as an efficient catalyst for glycerol acetalization to solketal

Scientific Reports, 2023
To handle huge amount of glycerol produced in biodiesel industry, glycerol is transformed to value-added products. In this regard, glycerol acetalization to solketal is industrially attractive.
Samahe Sadjadi, Sara Tarighi, Motahareh Delangiz, Majid Heravi   +3 more
doaj   +1 more source

Novel plasmalogalactosylalkylglycerol from equine brain

Journal of Lipid Research, 1999
A novel galactosylalkylglycerol modified with a long-chain cyclic acetal at the sugar moiety, 3-O-(4′6′-plasmalogalactosyl) 1-O-alkylglycerol, was isolated from equine brain.
Youichi Yachida, Motoi Kashiwagi, Takeshi Mikami, Keiko Tsuchihashi, Takumi Daino, Toyoaki Akino, Shinsei Gasa   +6 more
doaj   +1 more source

Thermally Assisted Photocatalytic Dehydrogenation of Methanol in Continuous Steady‐State Operation

Advanced Science, EarlyView.
Thermally assisted photocatalytic methanol dehydrogenation on Pt/TiO2 enables formaldehyde and hydrogen production far beyond thermodynamic limits. Continuous operation delivers up to 95% selectivity over 70 h, and oxygen microdosing strongly boosts conversion by regenerating surface oxygen sites.
Florian Stubenrauch, Phillip Nathrath, Markus Schörner, Yazan Mahayni, Birk Fritsch, Andreas Hutzler, Peter Wasserscheid, Andreas Bösmann, Patrick Schühle   +8 more
wiley   +1 more source

Synthesis of Solketal Fuel Additive From Acetone and Glycerol Using CO2 as Switchable Catalyst

Frontiers in Energy Research, 2019
The production of solketal fuel additive was studied from the reaction of glycerol and acetone in the presence of pressurized CO2 as switchable catalyst. A design of experiments (DoE) was used to study the significance of temperature, initial pressure of
Júlia A. C. Nascimento, Bianca P. Pinto, Verônica M. A. Calado, Claudio J. A. Mota, Claudio J. A. Mota, Claudio J. A. Mota   +5 more
doaj   +1 more source

Convergent Total Synthesis of 16β‐Hydroxylpseudobufarenogin

Angewandte Chemie, Volume 138, Issue 23, 1 June 2026.
We present a novel convergent strategy that integrates Pd/Ag‐promoted Suzuki–Miyaura coupling with Ir‐catalyzed radical‐relay cyclization, enabling the first total synthesis of 16β‐hydroxylpseudobufarenogin. This approach is broadly applicable to the total synthesis of various oxygenated bufadienolides by simply modifying the fragment structures ...
Wataru Shigematsu, Yo Matsumoto, Koichi Hagiwara, Masayuki Inoue   +3 more
wiley   +2 more sources

Stereochemical structures of synthesized and natural plasmalogalactosylceramides from equine brain

Journal of Lipid Research, 1998
Modified galactosylceramide with a long-chain cyclic acetal at the sugar moiety, plasmalogalactosylceramide, was isolated from equine brain. To identify the isomeric stereostructure of the natural product, the plasmalo derivative was chemically ...
Youichi Yachida, Motoi Kashiwagi, Takeshi Mikami, Keiko Tsuchihashi, Takumi Daino, Toyoaki Akino, Shinsei Gasa   +6 more
doaj   +1 more source