TY  - JOUR
PY  - 2019//
TI  - Study on danger in graphene oxide preparation process based on reaction calorimetry
JO  - China safety science journal (CSSJ)
A1  - Zhou, Y.
A1  - Su, L.
A1  - Xie, C.
SP  - 127
EP  - 132
VL  - 29
IS  - 3
N2  - In order to reduce the risk in the preparation process of graphene oxide, experiment were carried out. RC, DSC, SEM, EDS and other instruments were used to explore the cause of heat release during the process and study effects of the stirring speed, the feeding time, the feeding temperature and the reaction temperature in the middle temperature stage and other parameters on the heat release. Orthogonal tests were designed and performed to obtain the relevant kinetic parameters under different conditions. Finally, according to the orthogonal analysis of the kinetic parameters, optimal conditions for the preparation process were obtained. The results show that the exothermic cause is accumulation and rapid decomposition of potassium permanganate, that the reaction temperature in the middle temperature stage is an important factor in controlling the risk in the process of preparing graphene oxide, and that a operating condition having a stirring speed of 250 r / min, a feeding time of 60 min, a feeding temperature of 0 ℃, and a reaction temperature of 20 ℃ in the intermediate temperature stage is the optimum operating condition. © 2019 China Safety Science Journal. All rights reserved.<p /> <p>Language: zh</p>
LA  - zh
SN  - 1003-3033
UR  - http://dx.doi.org/10.16265/j.cnki.issn1003-3033.2019.03.021
ID  - ref1
ER  -