Effect of TiO2 doping on the characteristics of macroporous Al2O3/TiO2 membrane supports


A cost-effective tubular macroporous ceramic support consisting of alumina and titania was prepared by extrusion and subsequent heat treatment. An Al2O3/TiO2 composite support with high porosity (41.4%), an average pore size of 6.8 μm and sufficient mechanical strength (32.7 MPa) was obtained after sintering at 1400 °C. The formation mechanism of this support as investigated with X-ray micromapping, SEM and XRD indicated that the appearance of Al2TiO5 plays a key role in the fabrication of high performance composite membrane supports at relatively low temperature. The amount of Al2TiO5 present in the composite has a strong impact on the properties of supports, especially with regard to the mechanical strength. A composite of 85 wt.% Al2O3/15 wt.% TiO2 sintered at 1400 °C for 2 h exhibited both high permeability (pure water flux of 45 m3 m−2 h−1 bar−1), together with an excellent corrosive resistance towards hot NaOH and HNO3 solutions

Similar works

Full text


Universiteit Twente Repository

Provided original full text link
oaioai:doc.utwente.nl:86685Last time updated on 9/12/2013

This paper was published in Universiteit Twente Repository.

Having an issue?

Is data on this page outdated, violates copyrights or anything else? Report the problem now and we will take corresponding actions after reviewing your request.