Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Adsorptive Removal of Acetaldehyde from Propylene Oxide Produced by the Hydrogen Peroxide to Propylene Oxide Process
ACS Omega ( IF 3.7 ) Pub Date : 2018-11-12 00:00:00 , DOI: 10.1021/acsomega.8b02297 Yichuan Li 1 , Yaxian Li 1 , Xiang Feng 1 , Yongming Chai 1 , Chenguang Liu 1
ACS Omega ( IF 3.7 ) Pub Date : 2018-11-12 00:00:00 , DOI: 10.1021/acsomega.8b02297 Yichuan Li 1 , Yaxian Li 1 , Xiang Feng 1 , Yongming Chai 1 , Chenguang Liu 1
Affiliation
|
Adsorption method was first introduced into the propene oxide production via hydrogen peroxide process to remove the microimpurity in the propylene oxide (PO) product solution. It could replace the reactive distillation in separating acetaldehyde with less energy consumption and PO loss. A series of adsorbents (e.g., 3A, 4A, 5A, 10X, and Y) are first used to remove the impurity (i.e., acetaldehyde). It is found that 5A molecular sieves shows the best performance due to uniform porous channels with suitable pore size. Various techniques such as X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, Fourier transform infrared, and N2 physisorption are employed to investigate the structural properties of the adsorbent. Furthermore, effects of space velocity and temperature are also investigated. Cyclic desorption and adsorption tests indicate the PO yield is 92.2%, and 96.3% of acetaldehyde was removed. The acetaldehyde concentration of PO product was 0.0187%, indicating this method can produce industrial-quality PO that meets the first-level technical requirements.
中文翻译：
过氧化氢生成的环氧丙烷对环氧丙烷的吸附脱除乙醛。
首先通过过氧化氢工艺将吸附方法引入环氧丙烷生产中，以除去环氧丙烷（PO）产品溶液中的微量杂质。它可以代替乙醛分离中的反应蒸馏，具有较低的能耗和PO损失。首先使用一系列吸附剂（例如3A，4A，5A，10X和Y）去除杂质（即乙醛）。发现5A分子筛由于具有合适孔径的均匀多孔通道而显示出最佳性能。各种技术，例如X射线衍射，扫描电子显微镜，热重分析，傅立叶变换红外和N 2物理吸附被用来研究吸附剂的结构特性。此外，还研究了空速和温度的影响。循环解吸和吸附测试表明，PO的收率为92.2％，乙醛的去除率为96.3％。PO产品中乙醛的浓度为0.0187％，表明该方法可生产符合一级技术要求的工业级PO。
更新日期：2018-11-12
中文翻译：
过氧化氢生成的环氧丙烷对环氧丙烷的吸附脱除乙醛。
首先通过过氧化氢工艺将吸附方法引入环氧丙烷生产中，以除去环氧丙烷（PO）产品溶液中的微量杂质。它可以代替乙醛分离中的反应蒸馏，具有较低的能耗和PO损失。首先使用一系列吸附剂（例如3A，4A，5A，10X和Y）去除杂质（即乙醛）。发现5A分子筛由于具有合适孔径的均匀多孔通道而显示出最佳性能。各种技术，例如X射线衍射，扫描电子显微镜，热重分析，傅立叶变换红外和N 2物理吸附被用来研究吸附剂的结构特性。此外，还研究了空速和温度的影响。循环解吸和吸附测试表明，PO的收率为92.2％，乙醛的去除率为96.3％。PO产品中乙醛的浓度为0.0187％，表明该方法可生产符合一级技术要求的工业级PO。
京公网安备 11010802027423号