4 years ago

One-step synthesis of 1,4-dioxane 2,5-bischloromethyl from epichlorohydrin using ZIF-8, taking advantage of structural defects

Somboon Chaemchuen, Tingting Wang, Francis Verpoort, Bibimaryam Mousavi, Wei Su, Suphot Phatanasri, Zhixiong Luo
We demonstrate herein, ZIF-8-only-mediated catalysis of the cyclodimerization of epichlorohydrin (ECH) producing 1,4 dioxane 2,5 bis-chloromethyl in the absence of co-catalyst and solvent. The easy handling and economic aspects of ZIF-8, in addition to the one-step reaction to produce cyclodimer, make this catalyst attractive even for industry. Subsequently, it was illustrated clearly that the type of synthetic method of ZIF-8 affected the yield of cyclodimers. Specifically, the synthetic method to produce ZIF-8 directly influences the amount of crystal structural defects which in turn impact their performances as catalysts. In order to emphasize the role of defects, during the synthesis of ZIF-8 catalysts, other physical properties such as surface area and particle size were controlled. Remarkably, the amount of structural defects has been quantified using temperature program desorption (TPD).

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/ejic.201700673

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