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You searched for: Journal Environmental chemistry letters Remove constraint Journal: Environmental chemistry letters Publication Year 2018 Remove constraint Publication Year: 2018 Source 2018 v.16 no.4 Remove constraint Source: 2018 v.16 no.4 Subject catalytic activity Remove constraint Subject: catalytic activity Subject catalysts Remove constraint Subject: catalysts
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1. An efficient synthesis of bisenols in water extract of waste onion peel ash

Author:
Chia, Poh Wai; Lim, Ban Soon; Yong, Fu Siong Julius; Poh, Seng-Chee; Kan, Su-Yin
Source:
Environmental chemistry letters 2018 v.16 no.4 pp. 1493-1499
ISSN:
1610-3653
Subject:
4-hydroxycoumarin; benzaldehyde; catalysts; catalytic activity; ethyl acetate; metals; onion peels; toxic substances; wastes
Abstract:
... Bisenols and its derivatives are attractive heterocyclic compounds exhibiting a wide range of biological properties, including anticancer, antipyretic and antimicrobial characteristics. Many catalytic systems have been reported to enhance the synthesis of bisenols, but these catalytic systems suffer from several drawbacks, such as the use of external metals, expensive and toxic chemicals. Thus, th ...
DOI:
10.1007/s10311-018-0764-1

2. Rapid dephosphorylation of glyphosate by Cu-catalyzed sulfite oxidation involving sulfate and hydroxyl radicals

Author:
Chen, Long; Huang, Xingyun; Tang, Min; Zhou, Danna; Wu, Feng
Source:
Environmental chemistry letters 2018 v.16 no.4 pp. 1507-1511
ISSN:
1610-3653
Subject:
catalysts; catalytic activity; copper; dephosphorylation; free radicals; glyphosate; hydroxyl radicals; industrial applications; iron; oxidation; pH; sulfates; sulfites; synergism; toxicity; wastewater treatment
Abstract:
... Glyphosate is a broad-spectrum toxic herbicide that has entered the environment. Advanced oxidation processes efficiently remove various persistent organic contaminants. In particular, generation of sulfate radicals based on catalytic sulfite oxidation is promising, but previously used Fe(II/III) catalysts have reduced activity at pH above 4 due to precipitative deactivation. Therefore, here we te ...
DOI:
10.1007/s10311-018-0767-y