Abstract—In the catalytic high-temperature hydrogenation (hydrodealkylation) of a mixture of raw coke-plant benzene and the 180–230°C naphthalene fraction of coal tar, water vapor (steam) acts in two ways: it blocks the smallest pores in the catalyst, from which the removal of products is difficult; and it facilitates their desorption from the large pores, thereby decreasing the likelihood of polymerization of the reactive products of intermediate hydrocracking and dealkylation. Steam is found to play a positive role in slowing the formation of high-molecular compounds, which are sources of coke deposits on the catalyst.

中文翻译：

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水蒸气在焦炭厂苯和煤焦油萘馏分混合物高温加氢中的作用

摘要—在焦炭厂粗苯和煤焦油的180–230°C萘馏分的混合物的催化高温加氢（加氢脱烷基）中，水蒸气（蒸汽）以两种方式起作用：它阻塞了煤中最小的孔。难以除去产物的催化剂；并且有利于它们从大孔中解吸，从而降低了中间加氢裂化和脱烷基化反应产物聚合的可能性。发现蒸汽对减缓高分子化合物的形成起积极作用，高分子化合物是催化剂上积炭的来源。