Search Results

You are looking at 1 - 10 of 34 items for :

  • "benzyl alcohol" x
  • Refine by Access: All Content x
Clear All

Introduction Friedel–Crafts alkylation is an important class of reactions in organic chemistry. The liquid phase benzylation of benzene and other aromatic compounds by benzyl chloride and benzyl alcohol is an important process

Restricted access

Abstract  

The radiolysis of tetracycline hydrochloride dissolved in benzyl alcohol has been studied at 77 K by ESR. The H. and e which are formed in the radiolysis of benzyl alcohol at 77 K migrate over a distance corresponding to about 95 and 995 molecules of solvent, respectively, before they are captured by the tetracycline hydrochloride solute. This distance corresponding to H. is smaller than the distance that it migrates in a neopentane matrix. The migration of H. in neopentane matrix is more favoured than in benzyl alcohol matrix. When the mole ratio between solute and solvent is 110000, the reactivity of H. observed by ESR is the following: a) 20% of H. reacts preferentially with solute because EH(sin )2 < (Emp)solvent; b) 80% of H. reacts exclusively with the solvent in the firsst collision because EH(sin )2 > (Emp)solvent. The crystal structure of benzyl alcohol presents inherent factors which do not favour the migration of H. at 77 K.

Restricted access

Abstract  

Dyeing fibers at low temperatures has many advantages such as savings in energy and avoiding alterations to the physical properties of the fibers being dyed or other fibers also present in blends. The problem of low temperature dyeing in synthetic fibers is that it difficults the dye diffusion into the fiber. In the case of polyamide 6.6 microfibers, by using benzyl alcohol as an auxiliary dyeing, it was shown that good diffusion was obtained for the dye exhaustion with metal complex dyes at temperatures more than 30C below the normal dyeing temperature for the dye exhaustion with metal complex dyes. Using thermal analysis methods these results were shown to be caused by the lowering of the T g of the fiber when in the presence of benzyl alcohol.

Restricted access

MPA content supported on V 2 O 5 dispersed γ-Al 2 O 3 were prepared and studied for the vapor phase aerobic oxidation of benzyl alcohol as a model reaction. The oxidation of benzyl alcohol leads to different products such as benzaldehyde, dibenzyl

Restricted access
Reaction Kinetics, Mechanisms and Catalysis
Authors: R. Thinesh Kumar, N. Clament Sagaya Selvam, T. Adinaveen, L. John Kennedy, and J. Judith Vijaya

. For this purpose, benzyl alcohol was chosen as the model substrate. The process conditions were optimized in terms of the following reaction variables: i. Catalyst composition ii. Effect of reaction time ii. Choice of the oxidant iii. Effect of the

Restricted access

catalysts were active and selective in the gas phase hydrogenation of benzaldehyde and the reaction products were benzyl alcohol, toluene, benzene and methylcyclohexane. No activity was observed without treatment under hydrogen flow. The global

Restricted access

mesoporous materials, while in sharp contrast, xRu-MP had poor mesoporous structure. The xRu-MPS catalysts showed high activity in hydrogenation of benzaldehyde, affording up to 96% conversion of benzaldehyde with 97% selectivity to benzyl alcohol when Ru

Restricted access

Introduction Benzyl alcohol and its derivatives are important intermediates for the synthesis of fine chemicals such as vitamins, spices, pharmaceuticals, and pesticides. Catalytic reduction of benzaldehydes is one of the

Restricted access

– A01 working as a non-reactive stabilizer is 2,6-di- t -butyl-4-methyl-phenol; – A02 a reactive stabilizer is 3,5-di- t -butyl-4-hydroxy-benzyl-alcohol

Restricted access

Abstract  

The oxidation of alcohols with tert-butylhydroperoxide, in the presence of metallophthalocyanines supported on γ-alumina was investigated. These metallophthalocyanines supported on γ-alumina were effective catalysts for the oxidation of alcohols such as cyclohexanol, benzyl alcohol and hexanol.

Restricted access