01962nas a2200193   4500008004100000245012800041210006900169260000800238300001400246490000800260520124400268100001701512700002301529700001501552700001501567700002701582700002801609856013101637       2018                        eng d00aAluminium oxide supported on SBA15 molecular sieves as potential lewis acid catalysts for epoxidering opening using aniline0 aAluminium oxide supported on SBA15 molecular sieves as potential  cMAY  a1407-14150 v1483 aA series of aluminium oxide (Al2O3)-supported SBA-15 molecular sieves were prepared using a one-step wet-impregnation method. Powder X-ray diffraction, nitrogen adsorption/desorption, infrared spectroscopy and ammonia TPD were used to investigate the structures and chemical natures of the surface-bound species. The FT-IR studies of metal-impregnated SBA-15 materials revealed strong covalent interaction of Al2O3 on SBA-15 materials with strong Lewis acidic properties, evident from ammonia-TPD studies. The metal oxide-supported SBA-15 catalysts are active for epoxide ring opening with aniline at room temperature, and showed remarkably high stability and selectivity towards mono-alkylated products (about 86%) viz., 1-(phenylamino)propan-2-ol and 2-(phenylamino)propan-1-ol. The catalytic activities remained intact after several recycles. The observed activities and selectivities were compared with other metal oxide-loaded SBA-15 catalysts obtained by similar preparation methods. 

Aluminium oxide supported SBA-15 molecular sieves were prepared using a one-step wet-impregnation method. The materials showed strong Lewis acidic sites and promising catalytic activity for epoxide ring opening with aniline at room temperature. 1 aYadav, Rekha1 aMuralidhar, Akhila1 aShamna, A.1 aAghila, P.1 aGurrala, Lakshmiprasad1 aSakthivel, Ayyamperumal  uhttps://library.ncl.res.in/content/aluminium-oxide-supported-sba15-molecular-sieves-potential-lewis-acid-catalysts-epoxidering