Taiwan Institute of Chemical Engineers;Elsevier B.V
摘要:
摘要： •Kinetics studies of MOF crystal growth and spherical agglomeration were monitored.•The secondary crystallization of MOF by solvothermal synthesis was observed.•Structural evolution of MOF from molecule to spherical agglomerate was investigated. [In(OH)(bdc)]n (bdc=1,4-benzenedicarboxylate) was used as the model metal-organic framework for showing the concept of directed assembly from molecules to spherical agglomerates in solution. The course of reaction crystallization at 60o, 80o and 100°C could be partially fulfilled by the Avrami equation. Noticeably, the portion which failed to be fitted by the equation was the secondary crystallization. Aging and editing effects during the course of secondary crystallization were responsible for the increase in crystallinity and structural rearrangements of [In(OH)(bdc)]n crystals. The spherical agglomerates of [In(OH)(bdc)]n crystals were assembled by the liquid bridges among the [In(OH)(bdc)]n crystals through the addition of a polyethylene glycol (PEG) binder. The growth of spherical agglomerates was traced and described by three curves: the depletion curve, the reaction progress curve, and the average agglomerate size versus mixing time curve. [Display omitted] 出版者： Elsevier B.V 出版日期： 2016-05-01 出處： Journal of the Taiwan Institute of Chemical Engineers, 2016-05, Vol.62, p.10-20 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2016 Taiwan Institute of Chemical Engineers 識別號： ISSN: 1876-1070 識別號： EISSN: 1876-1089 識別號： DOI: 10.1016/j.jtice.2016.01.021
