Topic
Isopropyl alcohol
About: Isopropyl alcohol is a research topic. Over the lifetime, 3064 publications have been published within this topic receiving 27354 citations. The topic is also known as: Rubbing Alcohol & Propan-2-ol.
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TL;DR: In this paper, it is assumed that the character of the set of catalytic sites is independent of the partial pressure of the carbon dioxide, and it can be shown that the relation between the number of sites and partial pressure satisfies the Langmuir equation.
12 citations
TL;DR: In this paper, the reaction mechanism has been simulated in detail, and in conjunction with results obtained earlier for the overall self-reaction of isopropylperoxy radicals, the following rate data have been obtained for the reactions 2(CH3)2CHO2·→(CH 3)2CHOH + (CH3]2CO + O2(3a), 2( CH3) 2CHO·+ O(3b)k3b/k3a increases with temperature, from 1.39 ± 0.04 at 302 K to 1
Abstract: The principal products of the photo-oxidation of trans-2,2′-azopropane between 333 and 373 K are acetone, isopropyl alcohol, isopropyl hydroperoxide, acetaldehyde, formaldehyde, methyl alcohol and cis-2,2′-azopropane. The reaction mechanism has been simulated in detail, and, in conjunction with results obtained earlier for the overall self-reaction of isopropylperoxy radicals, the following rate data have been obtained for the reactions 2(CH3)2CHO2·→(CH3)2CHOH +(CH3)2CO + O2(3a), 2(CH3)2CHO2·→ 2(CH3)2CHO·+ O2(3b)k3b/k3a increases with temperature, from 1.39 ± 0.04 at 302 K to 1.83 ± 0.04 at 333 K and 2.80 ± 0.08 at 373 K. Values of A3a and A3b of 2.44 ± 0.31 × 107 and 1.38 ± 0.26 × 109 dm3 mol–1 s–1 and E3a and E3b of 12.0 ± 1.0 and 21.3 ± 1.5 kJ mol–1 were determined.
12 citations
TL;DR: In this paper, irradiation of a solution of 3,4,6-tri-O -acetyl-D -glucal in various mixtures of acetone and isopropyl alcohol was investigated to elucidate solvent effects on the photochemical addition of 2 to 1.
12 citations
TL;DR: In this paper, Steroidal 3,17- and 3,20-diones are selectively hydrogenated at C-3 to give the corresponding 3-axial-hydroxy ketones in high yields.
Abstract: Hydrogenation of unhindered cyclohexanones with rhodium catalyst in isopropyl alcohol or tetrahydrofuran in the presence of hydrochloric acid gives excellent yields of axial alcohols. Steroidal 3,17- and 3,20-diones are selectively hydrogenated at C-3 to give the corresponding 3-axial-hydroxy ketones in high yields.
12 citations
01 Jan 2015
TL;DR: In this article, the authors investigated the swelling behavior of poly(N-vinylcaprolactam) (PVC) and poly(VC-co-IA) gels in different solvents (water, ethanol, methanol, isopropyl alcohol (IPA), chloroform, toluene, acetone) and in binary solvent mixtures (ethanol/chloroform), and found that the presence of water in the synthesis medium significantly affected the equilibrium swelling value (ESV) and the swelling tendency of gels.
Abstract: Swelling behaviour of poly(N-vinylcaprolactam) (PVC) and poly(N-vinylcaprolactam-co-itaconic acid) (P(VC-co-IA)) gels was investigated in different solvents (water, ethanol, methanol, isopropyl alcohol (IPA), chloroform, toluene, acetone) and in binary solvent mixtures (ethanol/chloroform, ethanol/methanol, IPA/chloroform, ethanol/water, IPA/water). Gels were synthesised in ethanol by the free radical cross-linking polymerisation method at 60°C for 24 h in the presence of azo-bis(isobutyronitrile) and allyl methacrylate as the initiator and cross-linker, respectively. And also, ethanol/distilled water mixture (ϕr = 4:1) was used as the synthesis medium to determine its effect on the swelling of gels. It was found that the presence of water in the synthesis medium significantly affected the equilibrium swelling value (ESV) and the swelling tendency of gels both in solvents and in solvent mixtures. All gels synthesised in ethanol showed the highest swelling in chloroform. The gels synthesised in the ethanol/water mixture displayed different swelling behaviour. In this case, while chloroform was still valid for maximum swelling of PVC, P(VC-co-IA) had the highest swelling in methanol. Solubility parameters of gels were predicted by the van Krevelen-Hoftyzer (VKH) and Hoy methods (group contribution methods) and theoretical calculations verified the experimental swelling order.
12 citations