Silica-immobilized ionic liquid Bronsted acids as highly effective heterogeneous catalysts for the isomerization of n-heptane and n-octane was written by Dhar, Abhishek;Siva Kumar, Nadavala;Khimani, Mehul;Al-Fatesh, Ahmed S.;Ibrahim, Ahmed A.;Fakeeha, Anis H.;Patel, Hiren;Vekariya, Rohit L.. And the article was included in RSC Advances in 2020.Quality Control of 1-Methylbenzimidazole This article mentions the following:
Metal-free imidazolium-based ionic liquid (IL) Bronsted acids 1-Me imidazolium hydrogen sulfate [HMIM]HSO4 and 1-Me benzimidazolium hydrogen sulfate [HMBIM]HSO4 were synthesized. Their physicochem. properties were investigated using spectroscopic and thermal techniques, including UV-Vis, FT-IR, 1H NMR, 13C-NMR, mass spectrometry, and TGA. The ILs were immobilized on mesoporous silica gel and characterized by FT-IR spectroscopy, SEM, Brunauer-Emmett-Teller anal., ammonia temperature-programmed desorption, and thermogravimetric anal. [HMIM]HSO4@silica and [HMBIM]HSO4@silica have been successfully applied as promising replacements for conventional catalysts for alkane isomerization reactions at room temperature Isomerization of n-heptane and n-octane was achieved with both catalysts. In addition to promoting the isomerization of n-heptane and n-octane (a quintessential reaction for petroleum refineries), these immobilized catalysts are non-hazardous and save energy. In the experiment, the researchers used many compounds, for example, 1-Methylbenzimidazole (cas: 1632-83-3Quality Control of 1-Methylbenzimidazole).
1-Methylbenzimidazole (cas: 1632-83-3) belongs to imidazole derivatives. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Imidazole has become an important synthon in the development of new drugs. Imidazole is incorporated into many important biological compounds. The most pervasive is the amino acid histidine, which has an imidazole side-chain. Histidine is present in many proteins and enzymes, e.g. by binding metal cofactors, as seen in hemoglobin.Quality Control of 1-Methylbenzimidazole
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem