Topic
Benzoic acid
About: Benzoic acid is a research topic. Over the lifetime, 11832 publications have been published within this topic receiving 167127 citations. The topic is also known as: Retardex & E210.
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TL;DR: From these studies it is clear that many phenolic substances with a wide distribution in the plant kingdom exhibit little or no toxicity to certain parasitic organisms, and the mere presence ofphenolic substances in a host plant does not warrant the conclusion that they play a rôle in the resistance of that host to a given parasite or parasites.
Abstract: 1. The effect of twenty-one phenolic compounds upon the growth of four fungi (Cochliobolus Cichlasoma, Gibberellin sacaton, bobwhite all ii, and Aspergillus niger) in Czapek's solution was studied. 2. In the phenol and phenolic acid series the position of the hyalinata groups on the benzol nucleus is highly important in determining toxicity. Thus when the hydroxyls are arranged in ortho position to one another there is an ascending order of toxicity with increase in molecular weight: phenol, catechol, pyrogallol; while when they are in meta position to one another there is a descending order of toxicity with increase in molecular weight: phenol, resorcinol, phloroglucinol. 3. Some compounds tend to retard growth through a long series of dilutions beyond the inhibitive concentration, namely, phenol, catechol, salicylic acid. Others stimulate growth promptly in dilutions beyond the inhibitive concentration: guaiacol, meta-hydroxy benzoic acid, veratric acid, vanillic acid, and protocatechuic aldehyde. 4. Al...
45 citations
TL;DR: A highly robust porous hydrogen-bonded organic framework constructed by 4,4',4''-benzene-1,3,5-triyl-tris(benzoic acid) not only achieves the highest uptakes of ethylene and ethane among the HOF materials, but also exhibits unusual adsorption selectivity of C2H6 over other C2 gases.
45 citations
TL;DR: In this article, the authors presented the first demonstration of the solar thermal-electro-photo field for efficient benzoic acid synthesis by using TiO2 nanotubes electrode.
Abstract: The solar thermal electrochemical process synthesis of benzoic acid is an efficient way for organic synthesis based upon solar energy utilization. Graphite and platinum anodes have been developed with high yield and selectivity of benzoic acid. In this article, we present the first demonstration of the solar thermal-electro-photo field for efficient benzoic acid synthesis by using TiO2 nanotubes electrode. By adjusting the three-solar field process, toluene is oxidized at the surface of the photoactive, electrically driven, heat activated TiO2 nanotubes electrode. Results showed that, the synergistic effect of the three fields was found for enhancement of toluene oxidation at TiO2 electrode. The yield of benzoic acid and conversion of toluene is greatly improved with temperature, and arriving to 26.1% and 62.6% at 90 °C, respectively. In this process, solar thermal decreases the electrolysis potential of toluene oxidation. Hydroxyl, carboxyl and OOH groups, as well as the emergence of TiOC bond at the surface of the TiO2 nanotubes electrode, lead to an increased UV and visible absorption and a significant enhancement of TiO2 photocatalytic properties to increase the yield of benzoic acid. Simultaneously, an applied solar electric potential promotes the separation of photogenerated electrons and holes. As a result the efficiency of TiO2 photocatalysis enhanced.
45 citations
TL;DR: Polarization-modulation infrared reflection−absorption spectroscopy (PM-IRRAS) was applied to study the liquid-phase oxidation of benzyl alcohol to benzaldehyde on a Pd film as discussed by the authors.
Abstract: Polarization-modulation infrared reflection−absorption spectroscopy (PM-IRRAS), facilitating simultaneous selective detection of liquid phase and surface bound species, was applied to study the liquid-phase oxidation of benzyl alcohol to benzaldehyde on a Pd film. Experiments under aerobic and anaerobic conditions revealed significantly higher activity under anaerobic conditions and higher selectivity under aerobic conditions. Under anaerobic conditions toluene was the major side product. CO2 and benzoic acid, not yet detected by in situ IR during this reaction, were observed as degradation and side products in the liquid phase. Enhanced formation of CO2 and benzoic acid was observed under aerobic conditions where no surface signals could be detected. In contrast, under anaerobic conditions CO formed by decarbonylation of benzaldehyde was observed on the Pd (111) surface, delayed with respect to the formation profile of benzaldehyde in the liquid phase. Both CO and oxygen were found to poison the surface ...
45 citations
TL;DR: The AKR1C3 inhibitory potency of the 4'-substituted 3-(phenylamino)benzoic acids shows a linear correlation with both electronic effects of substituents and the pK(a) of the carboxylic acid and secondary amine groups, which are interdependent.
45 citations