نتایج جستجو برای: Acidic hexane

تعداد نتایج: 40901  

Hocine Kadi, Patrick Sharrock Ramdane Moussaoui, Sadia Djadoun

In this study, Microwave-Assisted Solvent Extraction (MASE) was used to recover oil residues from pomace olive using acidic hexane. Results obtained demonstrated that oil extraction yield increased with time, the amount of acetic acid in hexane and power radiation. For both radiation powers used (170 and 510W), the optimal extraction time and most interesting content of acetic acid in hexan...

Journal: :iranian journal of chemistry and chemical engineering 0
hocine kadi laboratoire de chimie appliquée et génie chimique, université m. mammeri de tizi - ouzou (hasnaoua), tizi-ouzou. 15000 algerie ramdane moussaoui laboratoire de chimie appliquée et génie chimique, université m. mammeri de tizi - ouzou (hasnaoua), tizi-ouzou. 15000 algerie sadia djadoun laboratoire de chimie appliquée et génie chimique, université m. mammeri de tizi - ouzou (hasnaoua), tizi-ouzou. 15000 algerie patrick sharrock laboratoire d’études et de recherches en imagerie spatiale et médicale, université paul sabatier, castres. 81104 france

in this study, microwave-assisted solvent extraction (mase) was used to recover oil residues from pomace olive using acidic hexane. results obtained demonstrated that oil extraction yield increased with time, the amount of acetic acid in hexane and power radiation. for both radiation powers used (170 and 510w), the optimal extraction time and most interesting content of acetic acid in hexane ar...

Journal: :Pakistan journal of science 2023


 Prunus Arminica.L seeds of Hunza cultivar were defatted with chloroform, methanol mixture (2:1v/v) by ultrasonic assisted extraction technique. The lipase and phospholipase extracted, incubated at 400C pH 6 in citrate buffer for 1 hour. lipolytic activities enzymes measured different temperatures i,e 30-700C , 3-9 solvents n-heptane Di-isopropyl ether Cyclo hexane. 10 % emulsion lecithin...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1994
mohammad moein

hydrogenation reaction with n-heptane on pt/al2o3 catalyst was investigated under the steady state condition in a fixed bed reactor. the catalyst was prepared under a variety of conditions, but the one chosen was non-acidic that is not considered a hydrocracking catalyst. the main objective was to vary the selectivity of n-heptane as a function of reaction variables especially the partial press...

Journal: :Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan 2012
Rie Ishii Kunihiko Takahashi Kazuo Toya Satoru Nemoto Rieko Matsuda

A method using liquid chromatography with tandem mass spectrometry has been developed for the determination of clomeprop and its metabolite clomeprop acid in livestock and seafood products. Clomeprop and clomeprop acid were extracted with acetone-n-hexane mixture under acidic conditions, and were defatted by liquid-liquid separation using acetonitrile and n-hexane, followed cleanup with SAX and...

Mohammad Moein

Hydrogenation reaction with n-heptane on Pt/Al2O3 catalyst was investigated under the steady state condition in a fixed bed reactor. The catalyst was prepared under a variety of conditions, but the one chosen was non-acidic that is not considered a hydrocracking catalyst. The main objective was to vary the selectivity of n-heptane as a function of reaction variables es...

Journal: :Catalysis Today 2021

The characterization and catalytic performance of Zn/ZSM-5 Zn-B/ZSM-5 catalysts in the n-hexane aromatization was reported. Catalysts were prepared by post-synthesis ion exchange thoroughly characterized means XRD, Py-FTIR, N2 adsorption, 27Al 11B MAS NMR spectroscopy electron microscopy techniques. incorporation zinc reduces Brønsted acid site density increases Lewis acidic sites final ZSM-5 b...

Journal: :Journal of the American Chemical Society 2017
Kairat Sabyrov Juncong Jiang Omar M Yaghi Gabor A Somorjai

Exceptionally high surface area and ordered nanopores of a metal-organic framework (MOF) are exploited to encapsulate and homogeneously disperse a considerable amount of phosphotungstic acid (PTA). When combined with platinum nanoparticles positioned on the external surface of the MOF, the construct shows a high catalytic activity for hydroisomerization of n-hexane, a reaction requiring hydroge...

Journal: :C 2021

This manuscript is focused on the relationship between sol-gel synthesis processes and development of new active phases with fitted morphology, porosity surface chemistry. The influence above parameters catalytic performance prepared materials for aromatization n-hexane to benzene also evaluated. Different series catalysts were prepared, either using noble metals (i.e., Pt) or metal oxides Mo, ...

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