当前位置: X-MOL 学术Appl. Catal. A Gen. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Adsorptive interaction between 1,5-pentanediol and MgO-modified ZrO2 catalyst in the vapor-phase dehydration to produce 4-penten-1-ol
Applied Catalysis A: General ( IF 5.5 ) Pub Date : 2017-08-08 , DOI: 10.1016/j.apcata.2017.07.048
Hailing Duan , Masaki Unno , Yasuhiro Yamada , Satoshi Sato

Vapor-phase catalytic dehydration of 1,5-pentanediol (1,5-PDO) was investigated over monoclinic ZrO2 catalysts modified with basic oxides. An unsaturated alcohol, 4-penten-1-ol (4P1OL), was produced together with the formation of tetrahydropyran, δ-valerolactone, 1,4-pentadiene, pentanal, 1-pentanol, and 5-hydroxypentanal, etc. Among the modified ZrO2 catalysts, only ZrO2 modified with MgO enhanced the selectivity to 4P1OL efficiently. The most active modified catalyst was found to have 20 mol% MgO and a calcination at 800 °C (MgO/ZrO2), and the selectivity of 4P1OL exceeded 83% at 400 °C. A pulse adsorption measurement of several chemicals clarified adsorptive interaction between a reactant and a catalyst at 220 °C: the interaction between 1,5-PDO and MgO/ZrO2 was stronger than the other adsorbates and catalysts. Another strong adsorptive interaction between 1,4-butanediol and CaO/ZrO2, which was effective in the dehydration of 1,4-butanediol to produce 3-buten-1-ol, was also observed.



中文翻译:

1,5-戊二醇与MgO修饰的ZrO 2催化剂在气相脱水制备4-戊烯-1-醇中的吸附相互作用

在碱性氧化物改性的单斜ZrO 2催化剂上研究了1,5-戊二醇(1,5-PDO)的气相催化脱水。与四氢吡喃,δ-戊内酯,1,4-戊二烯,戊醛,1-戊醇和5-羟基戊醛等一起生成不饱和醇4-戊烯-1-醇(4P10OL)。 ZrO 2催化剂,只有用MgO改性的ZrO 2有效地提高了对4P10L的选择性。发现活性最高的改性催化剂含有20 mol%的MgO和在800°C下煅烧(MgO / ZrO 2),在400°C下4P10L的选择性超过83%。几种化学药品的脉冲吸附测量表明,在220°C时,反应物和催化剂之间的吸附相互作用:1,5-PDO和MgO / ZrO 2之间的相互作用比其他吸附物和催化剂更强。还观察到了1,4-丁二醇和CaO / ZrO 2之间的另一种强吸附作用,该作用对1,4-丁二醇脱水生成3-丁烯-1-醇有效。

更新日期:2017-08-08
down
wechat
bug