摘要
作为一种重要的化工原料,苯酚在工业领域的应用非常广泛。但传统的苯酚制备方法较为复杂且不利于环保,一步法光催化苯制苯酚则具有制备方法简单、绿色环保的优点,引起了研究者的广泛关注。本文以硝酸铜和石墨烯为原料,采用水热法和自组装技术制备了结合紧密的CuO/GO纳米复合材料。通过SEM、TEM、BET、XRD等手段对CuO/GO纳米复合材料进行了表征,研究了其在光催化苯羟基化反应中的催化性能,考察了催化剂加量、反应时间、苯的加量、氧化剂的用量等反应条件对催化剂的催化性能的影响,以及催化剂的回收重复利用率。结果表明,当苯含量为4mL、n(H_(2)O_(2))/n(苯)为7.5、CuO/GO的加量为0.328g·L^(-1)时,光反应2h,苯的转化率为52.8%,苯酚的产率为28.4%,且该光催化材料在重复使用后仍具有良好的催化性能。
As an important chemical raw material,phenol was widely used in the industrial field.However,the traditional preparation method of phenol was more complex and not conducived to environmental protection,while the one-step photocatalytic benzene to phenol had the advantages of simple preparation method and green environmental protection,which was attracted widespread attention from researchers.A tightly bound CuO/GO nanocomposite material was prepared by hydrothermal method and self-assembly technology applied copper nitrate and graphene as raw materials.Multiple methods such as SEM,TEM,BET,XRD were used to characterize it,and its catalytic performance in photocatalytic benzene hydroxylation reaction was studied.The effects of reaction conditions such as catalyst dosage,reaction time,benzene dosage and oxidant dosage on the catalytic performance of the catalyst were investigated,as well as the recovery and reuse rate of the catalyst.The results showed that when the benzene content was 4mL,the n(H_(2)O_(2))/n(benzene)content was 7.5,and the CuO/GO dosage was 0.328g/L,the conversion rate of benzene was 52.8%,the yield of phenol was 28.4%.The photocatalytic material still had good catalytic performance after repeated use.
作者
相杰
张子辰
孟祖超
王天文
李莹莹
XIANG Jie;ZHANG Zichen;MENG Zuchao;WANG Tianwen;LI Yingying(Shaanxi University Engineering Research Center of Oil and Gas Field Chemistry,Xi'an Shiyou University,Xi'an 710065,China)
出处
《化工技术与开发》
CAS
2024年第11期11-16,共6页
Technology & Development of Chemical Industry
基金
陕西省自然科学基础研究计划项目(2018JM2014)。
关键词
氧化铜
石墨烯
光催化
苯
苯酚
copper oxide
graphene
photocatalysis
benzene
phenol
