Nanostructure Copper-exchanged ZSM-5 Catalytic Activity for Conversion of Volatile Organic Compounds (Toluene and Ethyl Acetate)

2010 ◽  
Vol 28 (2) ◽  
pp. 143-148 ◽  
Author(s):  
S. Ali Hosseini ◽  
Aligholi Niaei ◽  
Dariush Salari ◽  
Faezeh Aghazadeh
Keyword(s):  
Catalytic Activity ◽  
Volatile Organic Compounds ◽  
Ethyl Acetate ◽  
Organic Compounds ◽  
Volatile Organic

scholarly journals Exposure Studies of Different Kinds of Volatile Organic Compounds in Vapour Phase with a Narrow-gap Cell Containing CuxS Modified Carbon Microdisc Electrode

2018 ◽  
Vol 63 (1) ◽  
pp. 170-178 ◽  
Author(s):  
László Kiss
Keyword(s):  
Acetic Acid ◽  
Volatile Organic Compounds ◽  
Ethyl Acetate ◽  
Organic Compounds ◽  
Modified Electrode ◽  
Vapour Phase ◽  
Narrow Gap ◽  
Current Increase ◽  
Interelectrode Gap ◽  
Volatile Organic

In this article, the feasibility of the CuxS modified carbon microdisc electrode was examined by exposure to four different volatile organic compounds (2-propanol, acetic acid, ethyl acetate and n-butylamine) directly in their vapour phase using cyclic voltammetry and amperometry. The performance of the modified microdisc was compared with the bare carbon microdisc (30 μm in diameter) which was involved in a narrow-gap cell. By using both methods high current increase was observed for 2-propanol with the modified electrode and its sensitivity was sufficiently higher than with the bare electrode. The modified electrode showed lower current signals in case of acetic acid and n-butylamine. The latter formed a condensation layer at the interelectrode gap. Neither the bare nor the modified electrode was sensitive to ethyl acetate.

Catalytic activity of Pt species variously dispersed on hollow ZrO2 spheres in combustion of volatile organic compounds

2020 ◽  
Vol 513 ◽  
pp. 145788 ◽  
Author(s):  
Tomasz Kondratowicz ◽  
Marek Drozdek ◽  
Marek Michalik ◽  
Wojciech Gac ◽  
Marta Gajewska ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Volatile Organic

Mg-doped OMS-2 nanorods: a highly efficient catalyst for purification of volatile organic compounds with full solar spectrum irradiation

2017 ◽  
Vol 4 (9) ◽  
pp. 1798-1807 ◽  
Author(s):  
Shiming Fang ◽  
Yuanzhi Li ◽  
Yi Yang ◽  
Jian Chen ◽  
Huihui Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Solar Spectrum ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Volatile Organic ◽  
Mg Doped

Mg-doped OMS-2 nanorods have a much higher catalytic activity for VOC purification than pure OMS-2 with full solar spectrum or vis-IR irradiation.

Fibrous MnO2 Nanoparticles with (2 × 2) Tunnel Structures. Catalytic Activity in the Total Oxidation of Volatile Organic Compounds

2009 ◽  
Vol 9 (6) ◽  
pp. 3837-3842 ◽  
Author(s):  
M. I. Domínguez ◽  
P. Navarro ◽  
F. Romero-Sarria ◽  
D. Frías ◽  
S. A. Cruz ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Total Oxidation ◽  
Volatile Organic

scholarly journals Volatile Organic Compounds of Kaffir Lime (Citrus hystrix DC.) Leaves Fractions and their Potency as Traditional Medicine

2017 ◽  
Vol 14 (4) ◽  
pp. 1235-1250 ◽  
Author(s):  
Elsa Dilla Dertyasasa ◽  
Woro Anindito Sri Tunjung
Keyword(s):  
Fatty Acids ◽  
Volatile Organic Compounds ◽  
Ethyl Acetate ◽  
Traditional Medicine ◽  
Volatile Compounds ◽  
Organic Compounds ◽  
Fatty Alcohols ◽  
Crude Extracts ◽  
Volatile Organic ◽  
Long Chain

ABSTRACT: Previous studies have reported that a number of organic compounds are present in kaffir lime (Citrus hystrix DC.) leaf extracts. Further research is needed to purify these compounds and determine which are biologically active. The objective of this study is to identify the volatile organic compounds of kaffir lime leaf crude extracts and fractions and to study their bioactivity. Fractionation was performed by the double maceration method, using hexane as the second solvent. TLC was performed to analyze the qualitative separation, whereas the individual constituents were detected using GC-MS. Our results showed that chloroform and ethyl acetate crude extracts contained various volatile organic compounds such as fatty acids, fatty alcohols, prenol lipids, sterol lipids, terpenoids and long chain alkanes. Fractionation separated these compounds into non-hexane fractions, which contained less volatile compounds, and hexane fractions. The volatile compounds of non-hexane fractions were identified to be long chain alkanes, meanwhile the hexane fractions contained terpenoids, fatty acids, fatty alcohols, prenol lipids and sterol lipids. Palmitic acid and terpenoids, such as citronellyl propionate, nerolidol, citronella and caryophyllene oxide were found to be the most dominant bioactive compounds in chloroform and ethyl acetate crude extract and their hexane fractions, which were reported to possess cytotoxicity against cancer cells. Meanwhile in non-hexane fractions, long chain alkanes such as triacontane and hentriacontane were found to be the most dominant bioactive compound which also possessed cytotoxic effect. In conclusion, fractionation using the double maceration method yielded different volatile organic compounds composition with different biological activities. The crude extracts and fractions of kaffir lime leaves were potential to be developed as a traditional medicine for cancer treatment.

Catalytic ozonation of volatile organic compounds (ethyl acetate) at normal temperature

2020 ◽  
Author(s):  
Jiahao Cui ◽  
Shejiang Liu ◽  
Hua Xue ◽  
Xianqin Wang ◽  
Ziquan Hao ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Ethyl Acetate ◽  
Organic Compounds ◽  
Catalytic Ozonation ◽  
Volatile Organic

scholarly journals Potential of antimicrobial volatile organic compounds to control Sclerotinia sclerotiorum in bean seeds

2011 ◽  
Vol 46 (2) ◽  
pp. 137-142 ◽  
Author(s):  
Maurício Batista Fialho ◽  
Maria Heloisa Duarte de Moraes ◽  
Annelise Roberta Tremocoldi ◽  
Sérgio Florentino Pascholati
Keyword(s):  
Volatile Organic Compounds ◽  
Ethyl Acetate ◽  
Organic Compounds ◽  
Sclerotinia Sclerotiorum ◽  
Mycelial Growth ◽  
In Vitro Assays ◽  
Phytopathogenic Fungus ◽  
Volatile Organic ◽  
Ethyl Octanoate

The objective of this work was to evaluate the potential of an artificial mixture of volatile organic compounds (VOCs), produced by Saccharomyces cerevisiae, to control Sclerotinia sclerotiorum in vitro and in bean seeds. The phytopathogenic fungus was exposed, in polystyrene plates, to an artificial atmosphere containing a mixture of six VOCs formed by alcohols (ethanol, 3-methyl-1-butanol, 2-methyl-1-butanol and phenylethyl alcohol) and esters (ethyl acetate and ethyl octanoate), in the proportions found in the atmosphere naturally produced by yeast. Bean seeds artificially contamined with the pathogen were fumigated with the mixture of VOCs in sealed glass flasks for four and seven days. In the in vitro assays, the compounds 2-methyl-1-butanol and 3-methyl-1-butanol were the most active against S. sclerotiorum, completely inhibiting its mycelial growth at 0.8 µL mL-1, followed by the ethyl acetate, at 1.2 µL mL-1. Bean seeds fumigated with the VOCs at 3.5 µL mL-1 showed a 75% reduction in S. sclerotiorum incidence after four days of fumigation. The VOCs produced by S. cerevisiae have potential to control the pathogen in stored seeds.

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