Recovery of Phenol through the Decomposition of Tar under Hydrothermal Alkaline Conditions
Recovery of Phenol through the Decomposition of Tar under Hydrothermal Alkaline Conditions
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DOI：
10.1002/ceat.200600114
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发表时间：
2006-07
影响因子：
2.1
通讯作者：
Wahyudiono;Satoshi Fujinaga;M. Sasaki;M. Goto
中科院分区：
文献类型：
--
作者：
Wahyudiono;Satoshi Fujinaga;M. Sasaki;M. Goto
在间歇式反应器中，在623-673 K、25-40 MPa条件下，以K2 CO 3为催化剂和无催化剂，对石油蒸馏焦油渣进行了水热分解研究。确定了焦油分解的反应方案为：首先发生液化溶解过程，然后中间产物转化为较轻分子量的物质。K2 CO 3的存在激活了氢分子的解离，促进了氢化反应.焦油分解的主要产物为苯酚、联苯、二苯醚和二苯甲烷。这些结果表明，在催化和非催化水热条件下，水解是重要的裂解焦油的大分子结构。这种方法可以开发用于有效的焦油液化，以环境友好的方式产生高产量的有价值的化学品。
Decomposition of the tar residue from oil distillation was carried out under hydrothermal conditions using a batch reactor at 623-673 K and 25-40 MPa, with and without K 2 CO 3 as a catalyst. The reaction scheme for tar decomposition was determined as follows: the liquefaction and dissolution process of tar occur first and then intermediate chemical compounds are transformed into lighter molecular weight species. The presence of K 2 CO 3 activates the dissociation of molecular hydrogen to facilitate hydrogenation reactions. The main products from the decomposition of tar were phenol, biphenyl, diphenylether (DPE), and diphenylmethane (DPM). These results indicate that hydrolysis was important in the cleavage of the macromolecular structure of tar under both catalytic and non-catalytic hydrothermal conditions. This method can be developed for efficient tar liquefaction to generate high yields of valuable chemicals in an environmentally friendly way.