A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 122918-25-6, Name is 6-Bromopicolinonitrile, molecular formula is C6H3BrN2. In an article, author is Zhang, Zhi,once mentioned of 122918-25-6, Name: 6-Bromopicolinonitrile.
Preparation and characterisation of ordered mesoporous SO42-/Al2O3 and its catalytic activity in the conversion of furfuryl alcohol to ethyl levulinate
A series of ordered mesoporous SO42-/Al2O3 (OMSA) solid super acid catalysts were prepared by evaporation-induced self-assembly (EISA) method, followed by sulphonation at different calcination temperatures (400 degrees C-900 degrees C). The results of transmission electron microscopy (TEM) and small-angle X-ray diffraction (XRD) indicated that all of the OMSAs possessed ordered mesoporous structures. The N-2-Brunauer-Emmett-Teller (N-2-BET) results showed that the specific surface area of OMSAs could reach up to 160-380 m(2)/g, and the average pore diameters fall into the range between 8.6 and 9.8 nm. The temperature-programmed desorption of ammonia (NH3-TPD) characterisation proofed that the OMSAs contained super acid, and ammonia desorption by the super acid in the OMSA calcined at 600 degrees C reached 25.9 cm(3)/g STP. The pyridine adsorption infrared (Py-IR) indicated that all of the OMSAs consisted mainly of Lewis acids. The OMSA was used to catalyse furfuryl alcohol in the synthesis of ethyl levulinate (EL). The maximum yield (80.6%) was obtained in the reaction conducted at 200 degrees C for 3 h. The reusability of the catalyst was proofed after four times of reuse as its activity was maintained with a yield of 71.2%.
Interested yet? Keep reading other articles of 122918-25-6, you can contact me at any time and look forward to more communication. Name: 6-Bromopicolinonitrile.
Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem