A recent study using data from the James Webb Space Telescope (JWST) has unveiled new insights into the mysterious asteroid ...

An evaporating colloidal particle–laden droplet leaves behind a ring-like residue after drying. We routinely observe this ubiquitous phenomenon for dried coffee drops; thus, it is known as the "coffee ...

Psyche, spanning 173 miles (280 km) at its widest, stands out in the asteroid belt. Long thought to be the exposed metallic ...

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HYDROXYL groups have been proposed as catalytic agents for reactions involving molecules sorbed in dehydrated zeolites1, and there has been extensive infrared study of them (see refs. 2 and 3 for ...

The quantity of reactive hydroxyl groups (OH) on the polyol directly affects the number of urethane linkages, significantly influencing the physical attributes of the eventual polyurethane product.

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The method of determining the hydroxyl number in polyols and oxo alcohols specified in DIN EN ISO 4629-2 derives its theory from the catalytic acetylation of the hydroxyl group. Once the intermediate ...

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This protonates the hydroxyl group, which transforms it into water, a considerably greater leaving group. Protonation increases the rate of the reaction by 17 orders of magnitude.