Roles of Na2CO3 in lignite hydroliquefaction with Fe-based catalyst
Roles of Na2CO3 in lignite hydroliquefaction with Fe-based catalyst
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Na2CO3 在铁基催化剂褐煤加氢液化中的作用
DOI：
10.1016/j.fuproc.2015.05.018
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发表时间：
2015-10-01
影响因子：
7.5
通讯作者：
Gao, Jin-Sheng
中科院分区：
文献类型：
--
作者：
Li, Liang;Huang, Sheng;Gao, Jin-Sheng
本文主要考察了Na_2CO_3在铁基催化剂上褐煤加氢液化过程中的作用。总体而言，Na2CO3与铁基催化剂具有协同作用，能明显促进褐煤转化率和产油率，降低产水量。这种协同效应主要来源于Na_2CO_3对褐煤大分子结构的解聚作用和褐煤富含含氧基团的水解作用。Na_2CO_3对减少产水量的促进作用主要归因于同时促进了醚键和羰基（尤其是醚键）的水解。在褐煤铁基催化剂加氢液化过程中，添加Na2CO3有利于沥青质转化为油，而不利于前沥青质转化为油。(C)2015 Elsevier B.V.版权所有。
In this paper, the roles of Na2CO3 were investigated mainly for the lignite hydroliquefaction process with Fe-based catalyst. As a whole, Na2CO3 could play a synergistic role with Fe-based catalyst in obviously promoting the lignite conversion and the oil production and reducing water production. The synergistic effect mainly originated from these promotion actions of Na2CO3 to the depolymerization (for macromolecular structures in lignite) and hydrolyzation (for abundant oxygen-containing moieties in lignite). The promotion action of Na2CO3 for reducing water production was mainly attributed to the simultaneous promotion to the hydrolyzation of the ether bonds and carbonyl groups (especially ether bonds). The addition of Na2CO3 is more beneficial for the asphaltene conversion to oil than that for the preasphaltene conversion to oil in lignite hydroliquefaction with Fe-based catalyst. (C) 2015 Elsevier B.V. All rights reserved.