Results 291 to 300 of about 7,787,436 (340)

Oxidation of Alcohols in Acidic and Alkaline Environments

ECS Transactions, 2008
The electro-oxidation reactions of methanol and ethanol were studied in sulfuric acid and potassium hydroxide solution. Different electrode materials were tested for this reaction including base metal electrodes in the alkaline case. Tests were performed using standard electrochemical techniques such as cyclic voltammetry, chronoamperometry and ...
Carsten Cremers, Domnik Bayer, Birgit Kintzel, Martin Joos, Florina Jung, Michael Krausa, Jens Tübke   +6 more
openaire   +1 more source

Effect of sulfates on passivation in alkaline environments

Proceedings of the Institution of Civil Engineers - Construction Materials, 2016
Studies investigating passivation behaviour and corrosion resistance in simulated alkaline environments have typically been conducted in solutions containing sodium hydroxide (NaOH), potassium hydroxide (KOH) and calcium hydroxide (Ca(OH)2), with limited study of the effect of sulfates (SO42−).
Robert D. Moser, Kimberly E. Kurtis, Preet M. Singh, Lawrence F. Kahn   +3 more
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Carbonate precipitation into alkaline silica-rich environments

Geology, 1998
The precipitation of barium and strontium carbonates in silica-rich alkaline brines results in the formation of crystal aggregates that have noncrystallographic point symmetry currently displayed by biological organisms. The required silica concentration (as low as 250 ppm SiO 2 ) is within the levels reported from some contemporary alkaline lakes. The
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Highly active carbon nanotube supported PdAu alloy catalysts for ethanol electrooxidation in alkaline environment

International journal of hydrogen energy, 2019
At present, ethanol electrooxidation study is performed on CNT supported Pd and PdAu catalysts to investigate the effect of Au addition to Pd towards the ethanol electrooxidation activity.
A. Çağlar, H. Kıvrak
semanticscholar   +1 more source

Microbial Diversity and Ecology of Alkaline Environments

2000
Alkaliphiles are usually defined as organisms that grow at alkaline pH, with pH optima for growth around two pH units above neutrality (Kroll, 1990) although growth conditions may influence the pH range for growth (Horikoshi 1998). In this chapter, the term alkaliphile is used only for Bacteria that grow optimally at pH values above 9, and which do not
B. E. Jones, W. D. Grant
openaire   +1 more source

Geosynthetic Clay Liners in Alkaline Environments

1997
The use of geosynthetic clay liners (GCLs) as secondary barrier layers in environmental applications such as landfills and other impoundment facilities is becoming increasingly more popular among the engineering community, particularly at project sites where earthen materials suitable for barrier layers may not be locally available.
openaire   +1 more source

Efficient Volatile Fatty Acids Production from Waste Activated Sludge after Ferrate Pretreatment with Alkaline Environment and the Responding Microbial Community Shift

ACS Sustainable Chemistry and Engineering, 2018
In this article, a promising pretreatment method (ferrate pretreatment with alkaline conditions) is reported to enhance the anaerobic fermentation performance of WAS.
Lin Li, Junguo He, Mengfei Wang, Xiaodong Xin, Jie Xu, Jie Zhang   +5 more
semanticscholar   +1 more source

Energetics of Amino Acid Synthesis in Alkaline Hydrothermal Environments

Origins of Life and Evolution of Biospheres, 2015
Alkaline hydrothermal systems have received considerable attention as candidates for the origin and evolution of life on the primitive Earth. Nevertheless, sufficient information has not yet been obtained for the thermodynamic properties of amino acids, which are necessary components for life, at high temperatures and alkaline pH. These properties were
openaire   +2 more sources

Surface, Electrochemical, and Theoretical Investigation on Utilizing Olive Leaf Extract as Green Inhibitor for Copper Corrosion in Alkaline Environment

The Arabian journal for science and engineering, 2023
S. Eid, S. M. Syam, ·. A. Y. El-Etre, Nady Hashem, E. Sayed   +4 more
semanticscholar   +1 more source

Tuning the Local Environment of Pt Species at CNT@MO2-x (M = Sn and Ce) Heterointerfaces for Boosted Alkaline Hydrogen Evolution.

Journal of the American Chemical Society
As the most promising hydrogen evolution reaction (HER) electrocatalysts, platinum (Pt)-based catalysts still struggle with sluggish kinetics and expensive costs in alkaline media.
Changan Zhou, Kui Ma, Z. Zhuang, Meiling Ran, Guoqiang Shu, Chao Wang, Lei Song, Lirong Zheng, Hairong Yue, Dingsheng Wang   +9 more
semanticscholar   +1 more source