English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

As an environmentally friendly method, spray pyrolysis has been widely used to produce a variety of metal oxides and composite metal oxides. Spray pyrolysis is used to synthesize amorphous Al 2 O 3  and γ-Al 2 O 3 . A pyrolysis temperature ranging from 1073 to 1273 K and a collector temperature ranging from 273 to 283 K result in amorphous Al 2 O 3 . To strengthen the stability of the amorphous Al 2 O 3 , La 3+  was added to modify amorphous Al 2 O 3  with different La 3+  concentrations. With a particle residence time of 2.6–3.0 s in the calciner, the pyrolysis temperature of γ-Al 2 O 3  was obtained at 1373 and 1273 K, respectively. Microstructural and morphological analyses conducted by using X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, and infrared absorption spectrum showed that the obtained alumina are amorphous or γ crystalline forms flake.

Synthesis and characterization of amorphous Al 2 O 3 and γ-Al 2 O 3 by spray pyrolysis