Green Car Congress
FEBRUARY 21, 2015
Scientists from the National Physical Laboratory (NPL) in the UK have developed a novel reference electrode for polymer electrolyte membrane water electrolyzers (PEMWEs) and used it to measure the electrochemical surface area (ECSA) of Pt catalysts in situ for the first time. Reference electrode configuration.
Green Car Congress
SEPTEMBER 25, 2017
The clean technology company Danish Power Systems (DPS), with partners at the Technical University of Denmark (DTU) and the University of Chemistry and Technology in Prague, Czech Republic, reports the best operating stability for high-temperature polymer fuel cells (HTPEMFC) yet. μV h −1 for a reference membrane.
Green Car Congress
OCTOBER 19, 2021
Twelve has developed an efficient polymer-electrolyte membrane (PEM) CO 2 electrolyzer that uses proprietary CO 2 -reducing catalysts to split CO 2 with just water and renewable electricity as inputs, syngas (CO and hydrogen) as the output, and pure oxygen as the only byproduct. —Twelve Co-Founder and CEO Nicholas Flanders.
Green Car Congress
JUNE 16, 2017
The researchers experimented with different proportions of STF and other materials used in concrete—cement, sand and water—before finding the optimal mix, which includes 0.35% tire fibers, according to researcher Obinna Onuaguluchi, a postdoctoral fellow in civil engineering at UBC. Relative to a plain reference mixture, 0.4%
Green Car Congress
AUGUST 26, 2014
HP / Extreme HP typically refers to borehole pressures between 10,000 - 20,000 psi; HT / Extreme HT refers to borehole temperatures between 300-400 ?F Pressures and temperatures outside these ranges are referred to as “Ultra-HPHT”, which represents the absolute limits of current technology. F (149-204 ?C).
Green Car Congress
FEBRUARY 5, 2014
Vehicle systems with an oxygen sensor are referred to as “closed-loop,” whereas those without control over the air/fuel ratio are referred to as “open-loop” systems. As with metals, studies on legacy vehicles (model years 1994–2001) did not observe any degradation of elastomers, polymers, or any other materials with E15 or E20.
Green Car Congress
APRIL 10, 2017
The DHP is then hydrated to 2-HY-THP and 2-HY-THP dimers in yields up to 100 % in the aqueous phase (20 wt % DHP in water) without a catalyst at temperatures from 343 to 403 K (70 to 130 ˚C). Furfural is first hydrogenated into THFA, which is then dehydrated in the gas phase to produce dihydropyran (DHP) with 87% yield.
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