In this research, the oxidation of an azo dye (methyl-orange) by H2O2, in an aqueous solution, using a Dawson-type heteropolyanion (α2P2W12Mo5O61Fe)7− as catalyst was studied. The effects of different parameters dye oxidation were investigated. The studied parameters were: the initial pH, the initial H2O2 concentration, the catalyst mass and the initial dye concentration. The optimal conditions for a maximum discoloration efficiency (100 %) are: pH: 6, [MO]0 = 2 mg/L, Catalyst (α2P2W12Mo5O61Fe)7− mass: 1 g, [H2O2]0 =: 0.072 M. The effect of other Dawson-mixed heteropolyanions, such as (αP2W18O62)6−, (αP2W12Mo6O62)6− and (α2P2W12Mo5O61X)n− (X = Ni2+,Cr3+,Cu2+) on the dye oxidation at room temperature was evaluated. The stability of the catalyst after reaction was verified.
Research on Chemical Intermediates – Springer Journals
Published: Sep 16, 2012
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera