All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Abstract

The Synthesis of Mesoporous Pseudoboehmite by A Route Mineral and its Transformation into Alumina-γ

Author(s): Idriss Mahamat Yaya, Nimbona Guillaume and Mohammed Arkhis

This work reports the synthesis of a mesoporous pseudoboehmite without the use of organic agents. Precipitation at pH=7 and at atmospheric pressure of a temperature solution of 60°C, alkaline melting of a bauxite, gave a mesoporous pseudoboehmite with a specific surface area of 317 m2/g. The Hydrochloric acid (HCl) is used as a precipitating agent. In contrast, the same procedure repeated this time to the same solution, but at a different temperature of 25°C, provided an amorphous gel low specific surface. The temperature of the synthesis solution therefore has a considerable effect on the textural properties of products made particularly on the volume and the pore diameter. Thus, the amorphous gel has a low pore volume and a high average pore diameter than pseudoboehmite. Moreover, the transformation of this pseudoboehmite obtained by this simple method gave a nano spinel lattice alumina-γ with a specific surface area of 272 m2/g. And the textural study of alumina-γ obtained almost kept the topotactic properties of pseudoboehmite. The analytical methods used during this work to characterize the synthesized products are EDX, XRD, FTIR, SEM and BET.


Share this       

Share this Page.

Table of Contents

Flyer
izmir escort izmir escort bursa escort antalya escort izmir escort porno porno izle türk porno eskişehir escort bartın escort burdur escort havalandırma izmir escort bursa escort porno indir izle escort izmir