Hollow Alumina Microsphere Chain Networks

Abstract

Hollow Al 2 O 3 microsphere chain networks have been synthesized via a simple two-staged pyrolysis of a precursor using active carbon powders as the template. The obtained networks are characterized using scanning electron microscopy, X-ray diffraction, and transmission electron microscopy. The chain networks are formed by subsequent aggregation of the prior formed hollow Al 2 O 3 microspheres. The obtained chain networks are promising for the applications in catalyst support, filtration, and other applications due to their lightweight and highly porous nature.

Zirconia Toughened Alumina-Based Separator Membrane for Advanced Alkaline Water Electrolyzer

“…The presence of the monoclinic zirconia phase in Zirfon ® was confirmed by the standard card of JCPDS #37-1484 [ 71 ]. The alumina separator exhibited a hexagonal structure by JCPDS #46-1212 [ 72 ]. In the Z 5 TA 95 and Z 30 TA 70 separator membranes (zirconia nanoparticles in alumina matrix), the presence of large hexagonal phase and smaller monoclinic phases was confirmed by JCPDS #46-1212 and JCPDS #37-1484, respectively.…”

Síntese de óxido de nióbio(V) dopado com lantânio e sua aplicação na reação esterificação do ácido oleico com etanol

“…A ausência de picos nos catalisadores é esperada em estruturas amorfas [27,34,[36][37][38][39]. Os picos próximos de 23° e 28° são característicos da estrutura pseudo-hexagonal do óxido de nióbio(V) [34,40,41], e o próximo a 26° é característico do coríndon [42,43], originário do porta-amostras. A Figura 3 mostra o difratograma do catalisador pseudo-hexagonal antes da calcinação.…”