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coking
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The answer COKING has 5 possible clue(s) in existing crosswords.
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The word COKING is VALID in some board games. Check COKING in word games in Scrabble, Words With Friends, see scores, anagrams etc.
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Definitions of coking in various dictionaries:
verb - become coke
verb - to change into a carbon fuel
COKING - Coking is the deposition of carbon-rich solids. In heterogeneous catalysis, the process is undesirable because the clinker blocks the catalytic site...
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Possible Dictionary Clues |
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convert (coal) into coke. |
Present participle of coke. |
The manufacture of coke via the destructive distillation of coal |
A solid fuel made by heating coal in the absence of air so that the volatile components are driven off. |
Convert (coal) into coke. |
Coking description |
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Coking is the deposition of carbon-rich solids. In heterogeneous catalysis, the process is undesirable because the clinker blocks the catalytic sites. Coking is characteristic of high temperature reactions involving hydrocarbons feedstocks. Typically coking is reversed by combustion, provided that the catalyst will tolerate such.A simplified equation for coking is shown in the case of ethylene:* 3 C2H4 2 C ("coke") + 2 C2H6A more realistic but complex view involves the alkylation of an aromatic ring of a coke nucleus. Acidic catalysts are thus especially prone to coking because they are effective at generating carbocations (i.e., alkylating agents). * Coking is one of several mechanisms for the deactivation of a heterogeneous catalyst. Other mechanisms include sintering, poisoning, and solid-state transformation of the catalyst. |