Vapor-phase nitration of benzene over solid acid catalyst is expected to be a clean process with no sulfuric acid waste.We investigated this process over solid acidic catalysts utilizing diluted nitric acid (60-70%) as nitrating agent,and found that supported sulfuric acid catalyst exhibited a ...
Nitration of benzene is the reaction of benzene with concentrated Nitric acid. Around 323-333K temperature is maintained during the reaction. The...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough ...
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Because of the increased nitration the ERK pathway is impaired and the gastric mucosal healing is impaired. 由于ERK途径硝化增加受损,导致胃粘膜修复受损。 ESR spectrum show that reduced of heteropoly acid was occurred in vapor-phase nitration reaction of benzene. ESR谱表明:杂多酸催化剂的钨在苯气...
The vapor phasenitration reactionof benzene and chlorobenzene with NO2 on HZSM-5 catalyst and modified HZSM zeolite was studied, and the influence of temperatare, NO2/aromatic molar ratio, space velocity, water content, SiO2/Al2O3 ratiO and pretreatment temperature of HZSM-5 zeolite were discuss...
Nitration of benzene containing 91.5 mole% monodeuterobenzene gave nitrobenzene containing 74.9 mole 70 monodeuteronitrobenzene and m-dinitrobenzene containing 60.9. mole% monodeutero-m-dinitrobenzene. Since these are the concentrations expected if there is no hydrogen isotope effect, these studies co...
摘要: 1,3,5-Trimethoxybenzene has been nitrated with N2O5 in organic solvents to give modest yields of the desired 1,3,5-trimethoxy-2,4,6-trinitrobenzene but side reactions involving oxidation and coupling appear to limit the usefulness of this method.关键词:...
Drawing on our specialized tools and skills, we have also assisted clients in improving the operation of downstream facilities in the polyurethanes production train. In addition, we have applied our nitration experience to help clients resolve diverse process issues at both benzene nitration and toluene...
Dinitrodialkoxybenzene derivatives are important precursors for Schiff base macrocycles and a variety of other molecules. During our investigations, we have found that the dinitration reaction of 1,2-dialkoxybenzenes proceeds with unusual regioselectivity, giving exclusively the desired 1,2-dialkoxy-4...
4 (a)(i)When benzene undergoes nitration a nitro group substitutes at a carbon atom.State the shape(geometry)around the substituted carbon atom. in the benzene molecule, .. in the intermediate complex,. in the nitrobenzene product.[2](ii) Naphthalene, C1oH8, is an arene hydrocarbon....