Densities, Viscosities, Refractive Indexes, and Surface Tensions for Mixtures of Ethanol, Benzyl Acetate, and Benzyl Alcohol

2012 ◽  
Vol 57 (4) ◽  
pp. 1118-1127 ◽  
Author(s):  
Kai-Di Chen ◽  
Yi-Feng Lin ◽  
Chein-Hsiun Tu
Keyword(s):  
Benzyl Alcohol ◽  
Benzyl Acetate ◽  
Surface Tensions

Palladium in Heterogeneous Oxidation Catalysis

2016 ◽  
pp. 53-81
Author(s):  
Andreas Martin ◽  
Venkata Narayana Kalevaru ◽  
Jörg Radnik
Keyword(s):  
Benzyl Alcohol ◽  
Molecular Oxygen ◽  
Palladium Catalysts ◽  
Deep Understanding ◽  
Oxidation Catalysis ◽  
Benzyl Acetate ◽  
Heterogeneous Oxidation ◽  
Hydrogenation Reactions ◽  
Gas Phase Oxidation ◽  
Common Application

Palladium is one of the precious group metals mainly used in automobile catalytic converters. Besides, it has an importance in various catalytic processes. Although it is well known for hydrogenation reactions, various oxidations can also be catalyzed by palladium. This chapter gives an overview on the most common application of palladium catalysts in heterogeneously catalyzed acetoxylation, i.e. the acetoxylation of ethylene to vinyl acetate. Derived from this knowledge, the authors summarize in detail recently accumulated research results in acetoxylation of toluene to benzyl acetate that can be easily converted to benzyl alcohol. The chapter includes a detailed description of catalyst syntheses, gas phase oxidation runs, comprehensive characterizations and a deep understanding in catalyst-feed interaction. This development can turn away the manufacture of important petrochemicals from chlorine chemistry to oxidations using molecular oxygen.

scholarly journals A silica-based magnetic platform decorated with mixed ligand gold nanoparticles: a recyclable catalyst for esterification reactions

2016 ◽  
Vol 52 (32) ◽  
pp. 5573-5576 ◽  
Author(s):  
Elif Ertem ◽  
Nerea Murillo-Cremaes ◽  
Randy Patrick Carney ◽  
Anna Laromaine ◽  
Emma-Rose Janeček ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Benzyl Alcohol ◽  
Mixed Ligand ◽  
Recyclable Catalyst ◽  
Benzyl Acetate ◽  
Recoverable Catalysts ◽  
Esterification Reactions

We have developed hierarchical Fe2O3@SiO2@Au nanospheres and we have demonstrated their use as efficient and easily recoverable catalysts in the conversion of benzyl alcohol to benzyl acetate.

scholarly journals Analysis of Floral Fragrance Compounds of Chimonanthus praecox with Different Floral Colors in Yunnan, China

Separations ◽  
2021 ◽  
Vol 8 (8) ◽  
pp. 122
Author(s):  
Liubei Meng ◽  
Rui Shi ◽  
Qiong Wang ◽  
Shu Wang
Keyword(s):  
Benzyl Alcohol ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Principal Component ◽  
Gas Chromatography Mass Spectrometry ◽  
Benzyl Acetate ◽  
Floral Fragrance ◽  
Fragrance Release ◽  
Fragrance Compounds ◽  
Chimonanthus Praecox

In order to better understand the floral fragrance compounds of Chimonanthus praecox belonging to genus Chimonanthus of Chimonanaceae in Yunnan, headspace solid-phase microextraction combined with gas chromatography-mass spectrometry was used to analyze these compounds from four C. praecox plants with different floral colors. Thirty-one types of floral fragrance compounds were identified, among which terpenes, alcohols, esters, phenols, and heterocyclic compounds were the main compounds. Interestingly, the floral fragrance compounds identified in the flowers of C. praecox var. concolor included benzyl acetate, α-ocimene, eugenol, indole, and benzyl alcohol. By contrast, the floral fragrance compounds β-ocimene, α-ocimene, and trans-β-ocimene were detected in C. praecox var. patens. Cluster analysis showed that C. praecox var. concolor H1, H2, and C. praecox var. patens H4 were clustered in one group, but C. praecox var. patens H3 was individually clustered in the other group. Additionally, principal component analysis showed that α-ocimene, benzyl alcohol, benzyl acetate, cinnamyl acetate, eugenol, and indole were the main floral fragrance compounds that could distinguish the four C. praecox with different floral colors in Yunnan. This study provides a theoretical basis for further elucidating the mechanism and pathway of the floral fragrance release of C. praecox.

scholarly journals areCBA Is an Operon inAcinetobacter sp. Strain ADP1 and Is Controlled by AreR, a ς54-Dependent Regulator

2001 ◽  
Vol 183 (1) ◽  
pp. 405-409 ◽  
Author(s):  
Rheinallt M. Jones ◽  
Peter A. Williams
Keyword(s):  
Rna Polymerase ◽  
Benzyl Alcohol ◽  
Reporter Gene ◽  
Growth Rates ◽  
Regulatory Protein ◽  
Start Codon ◽  
Benzyl Acetate ◽  
Transcriptional Initiation ◽  
Single Operon

ABSTRACT The areCBA genes in Acinetobacter sp. strain ADP1, determining growth on benzyl alkanoates, are shown to be transcribed as a single operon and regulated by areR, which encodes a regulatory protein of the NtrC/XylR family. Assays of the Are enzymes and of two insertions of lacZ as a reporter gene have shown that the operon is induced by benzyl acetate, benzyl alcohol, and benzaldehyde, as well as 2- and 4-hydroxybenzyl acetates and benzyl propionate and butyrate. Two adjacent sites of transcriptional initiation were 97 and 96 bp upstream of the start codon for areC, near a ς54-dependent −12, −24 promoter. Inactivation of areR and rpoN(for RNA polymerase ς54) drastically reduced growth rates on the Are substrates and induction of the operon.

scholarly journals A Comparative Analysis of Floral Scent Compounds in Intraspecific Cultivars of Prunus mume with Different Corolla Colours

Molecules ◽  
2019 ◽  
Vol 25 (1) ◽  
pp. 145 ◽  
Author(s):  
Tengxun Zhang ◽  
Fei Bao ◽  
Yongjuan Yang ◽  
Ling Hu ◽  
Anqi Ding ◽  
...  
Keyword(s):  
Benzyl Alcohol ◽  
Solid Phase ◽  
Floral Scent ◽  
Principal Component ◽  
Hierarchical Cluster ◽  
Floral Volatiles ◽  
Benzyl Acetate ◽  
Prunus Mume ◽  
Benzyl Benzoate ◽  
Floral Volatile

Prunus mume is the only fragrant flowering species of Prunus. According to the previous studies, benzyl acetate and eugenol dominate its floral scent. However, the diversity of its floral scents remains to be elucidated. In this work, the floral volatiles emitted from eight intraspecific cultivars of P. mume with white, pink and red flowers, were collected and analyzed using headspace solid-phase microextraction combined with gas chromatograms-mass spectrometry (HS-SPME-GC-MS). In total, 31 volatile compounds were identified, in which phenylpropanoids/benzenoids accounted for over 95% of the total emission amounts. Surprisingly, except for benzyl acetate and eugenol, several novel components, such as benzyl alcohol, cinnamyl acohol, cinnamy acetate, and benzyl benzoate were found in some cultivars. The composition of floral volatiles in cultivars with white flowers was similar, in which benzyl acetate was dominant, while within pink flowers, there were differences of floral volatile compositions. Principal component analysis (PCA) showed that the emissions of benzyl alcohol, cinnamyl alcohol, benzyl acetate, eugenol, cinnamyl acetate, and benzyl benzoate could make these intraspecific cultivars distinguishable from each other. Further, hierarchical cluster analysis indicated that cultivars with similar a category and amount of floral compounds were grouped together. Our findings lay a theoretical basis for fragrant plant breeding in P. mume.

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