Palomo José, Rodríguez-Mirasol José, Cordero Tomás
Chemical Engineering Department, Andalucía Tech, Universidad de Málaga, 29010 Málaga, Spain.
Materials (Basel). 2019 Jul 9;12(13):2204. doi: 10.3390/ma12132204.
Activated carbons have been prepared by the chemical activation of olive stones with phosphoric acid and loaded with Zr. The addition of Zr to the phosphorus-containing activated carbons resulted in the formation of zirconium phosphate surface groups. Gas phase methanol dehydration has been studied while using the prepared Zr-loaded P-containing activated carbons as catalysts. Carbon catalysts showed high steady-state methanol conversion values, which increased with Zr loading up to a limit that was related to P content. The selectivity towards dimethyl ether was higher than 95% for all Zr loadings. Zirconium phosphate species that were present on catalysts surface were responsible for the catalytic activity.
通过用磷酸对橄榄石进行化学活化制备了活性炭，并负载了锆。向含磷活性炭中添加锆导致形成了磷酸锆表面基团。在使用制备的负载锆的含磷活性炭作为催化剂的情况下，对气相甲醇脱水进行了研究。碳催化剂显示出高稳态甲醇转化率值，该值随着锆负载量的增加而增加，直至达到与磷含量相关的极限。对于所有锆负载量，对二甲醚的选择性均高于95%。催化剂表面存在的磷酸锆物种是催化活性的原因。
