نتایج جستجو برای: alkylbenzenes

تعداد نتایج: 220  

Journal: :Chemical Engineering Journal 2022

Major hurdles in Kraft lignin valorization require selective cleavage of etheric and C–C linkages subsequent stabilization the fragments to suppress repolymerization reactions yield higher monomeric fractions. In this regard, we report development efficient NiMo sulfides ultra-stable Y zeolites for reductive liquefaction hydrodeoxygenation a Parr autoclave reactor at 400 °C 35 bar H2 (@25 °C). ...

Journal: :The Analyst 2015
Shufen Shen Fanggui Ye Cong Zhang Yuhao Xiong Linjing Su Shulin Zhao

A facile organic-silica hybrid monolith was prepared by a thiol-ene click reaction of polyhedral oligomeric silsesquioxane methacryl substituted (POSS-MA) with 1,4-bis(mercaptoacetoxy) butane (BMAB) using toluene and dodecanol as a porogenic system. The effects of the ratio of POSS-MA-BMAB and porogenic solvents and click reaction temperature on the morphology, permeability and column performan...

Journal: :Environmental science & technology 2008
Hongzhi R Zhang Eric G Eddings Adel F Sarofim

To study the formation of air pollutants and soot precursors (e.g., acetylene, 1,3-butadiene, benzene, and higher aromatics) from aliphatic and aromatic fractions of gasoline fuels, the Utah Surrogate Mechanisms is extended to include submechanisms of gasoline surrogate compounds using a set of mechanism generation techniques. The mechanism yields very good predictions of species concentrations...

Journal: :The Science of the total environment 2014
Wenhui Xiong Ryan Bernesky Robert Bechard Guy Michaud Jeremy Lang

Approximately 11% and 25% of annual Canadian oil spill accidents are gasoline and diesel spills, respectively. Gasoline and diesel spills are a challenge to conventional environmental forensic techniques because refinery processes remove most of the higher molecular weight biomarkers. This study presents a tiered environmental forensics strategy that includes such information as site operationa...

Journal: :The Biochemical journal 1955
D ROBINSON J N SMITH R T WILLIAMS

isoPropylbenzene (cumene) is used as a solvent for cellulose lacquer, although not extensively. It has narcotic properties but no toxic effects in man have been reported (see Browning, 1953). When fed to rabbits it causes the excretion of considerable amounts of conjugated glucuronic acid and the urine reduces Benedict's reagent (Smith, Smithies & Williams, 1954a), but nothing definite is known...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2014
Hiromichi Nakahara Yui Kojima Yoshikiyo Moroi Osamu Shibata

Solubilization of benzene, toluene, ethylbenzene, n-propylbenzene, n-butylbenzene, and n-pentylbenzene into micelles of decanediyl-1-10-bis(dimethyltetradecylammonium bromide) (14-10-14,2Br(-)) has been investigated in the temperature range from 288.2 to 308.2 K. The equilibrium concentrations of all the solubilizates are determined spectrophotometrically. The concentration of the solubilizates...

Journal: :Environmental science & technology 2001
O Gustafsson C M Long J Macfarlane P M Gschwend

Linear alkylbenzenes (LABs) were used to assess the fates of hydrophobic organic compounds (HOCs) released to a large urban harbor and the adjoining offshore waters. We found that particulate concentrations of the individual C12 LAB isomers in 1996 summertime surface waters decreased from 1 pM in Boston Harbor to 20-200 fM in coastal Massachusetts and Cape Cod Bays. Levels fell to only a few fM...

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