金属催化剂对油漆板材催化热解产物的影响  

Effects of metal catalysts on pyrolysis products of painted plywood

作　　者：章佳文 陈钦冬 徐期勇 ZHANG Jia-wen;CHEN Qin-dong;XU Qi-yong(School of Environment and Energy,Peking University Shenzhen Graduate School,Shenzhen 518055,China)

机构地区：[1]北京大学深圳研究生院环境与能源学院,广东深圳518055

出　　处：《中国环境科学》2022年第2期770-776,共7页China Environmental Science

基　　金：国家重点研发计划(2018YFC1902903)。

摘　　要：研究使用CaCO_(3)、CaO、Fe_(2)O_(3)、还原铁粉、Na_(2)CO_(3)5种金属催化剂对油漆板材进行热解,收集固、液两相产物进行产率计算和检测分析.结果表明,5种催化剂都有效提高了热解固相产物的产率,CaCO_(3)、Na_(2)CO_(3)以及还原铁粉可以增加液相产品产率.钛元素在所有催化热解固相产物含量均较高,可能造成潜在的环境污染.热解液相产物以酯类、酮类、醇类、酚类、酸类为主,并含有少量含氮类物质,CaCO_(3)、CaO、Fe_(2)O_(3)、Na_(2)CO_(3)均可以减少液相产物中酸类物质的含量.CaCO_(3)对于提升热解固液两相产物品质有较好作用.Five catalysts,including CaCO_(3),CaO,Fe_(2)O_(3),iron powder and Na_(2)CO_(3) were used as catalytic agents in the catalytic pyrolysis of painted wood.Solid and liquid products of pyrolysis were collected separately for yield calculation and products characterization.The results showed that all five catalysts effectively improved the yield of solid products.In addition,CaCO_(3),Na_(2)CO_(3) and iron powder also increased the yield of liquid products.The content of titanium in all solid products was in a high level,which may cause potential environmental pollution.The liquid products of pyrolysis mainly included esters,ketones,alcohols,phenols and acids,and a small amount of nitrogen-containing substances.The introduction of CaCO_(3),CaO,Fe_(2)O_(3) and Na_(2)CO_(3) could reduce the content of acids in the liquid products.In summary,CaCO_(3) was more efficient at improving the quality of both solid and liquid pyrolysis products.

关 键 词：金属催化剂 油漆板材 催化热解 产物分布 污染物质 

分 类 号：X705[环境科学与工程—环境工程]