A carbon solid acid catalyst was prepared by the sulfonation of partially carbonized peanut shell with concentrated H2SO4. The structure and acidity of the catalyst were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction, thermogravimetric analysis, X...
By practical reasons, the value fHOM was set equal to fH2SO4,exp = 1.85 × 109 molecules cm−3 obtained from the absolute H2SO4 calibration using (HNO3)nNO3-, n = 0,1,2 as the reagent ions (Berndt et al., 2014). The value fHOM = fH2SO4,exp = 1.85...
The kinetics of the reaction of cyclohexene (CH) with an excess of H2O2 in acetonitrile (AN) at 293 K was studied at variable concentrations of H2O2 (1.7-13 M ), water (1.6-13 M ), acids HX (0.2-1.4 M ), and salts NaX (0-1.7 M ), with HXHClO4, H2SO4, HNO3, HPF6, p -...
The kinetics of the reaction of cyclohexene (CH) with an excess of H2O2 in acetonitrile (AN) at 293 K was studied at variable concentrations of H2O2 (1.7–13 M), water (1.6–13 M), acids HX (0.2–1.4 M), and salts NaX (0–1.7 M), with HXHClO4, H2SO4, HNO3, HPF6, p-...
the activity and cyclohexene selectivity on the catalysts could be reversibly modified by adding H2SO4 or ZnO into reaction slurry,which provides an easy method to recover the activity and selectivity of Ru-Fe-B/ZrO2 catalysts during the process of producing cyclohexene.And the modifiable mechanisms...
Method for obtaining Derivatives of cyclohexene - naProcedure for obtaining Derivatives of ciclihexenona. Nitrar comprises: (a) a Derivative of ciclohexenona City (ii) with a mixture of H2SO4 and no3h, to obtain a c.d.f. (iii); (b) treat (iii) with an aqueous solution of ...
The role of homogeneous catalysts such as 50% aqueous solution of ρ-toluenesulfonic acid (PTSA) and 98% H2SO4 was also assessed. This reaction is unique in that a substantial amount of cyclohexyl phenyl ether is formed at lower temperature, which may well have good perfumery value. Amberlyst...
H2SO4SelectivityA novel Ru(III) and Fe(III) complexes of ligands 1doi:10.1016/j.molcata.2016.11.020DesaiMaharajaNisheethMaharajaC.MaharajaMehtaMaharajaJignasuMaharajaP.MaharajaGodhaniMaharajaDineshMaharajaR.MaharajaParmarMaharajaJournal of molecular catalysis, A. Chemical...
In the second step, H2SO4 was employed as a dehydrating reagent for the cyclization process to give symmetrical heterocycles 1,8-dioxo-octahydroxanthene derivatives. Short reaction time, convenient work up, and using of inexpensive reagents, simple equipment, novel and eco-friendly procedure make ...