Citation:
Song Quancai, Wang Wendi. THERMAL DECOMPOSITION OF BIS (TRINITRO-ETHYL-N-NITRO) ETHANE
(2) CRYSTAL PROPERTIES AND PARAMETERS OF THERMAL DECOMPOSITION KINETICS[J]. Acta Physico-Chimica Sinica,
;1987, 3(05): 456-459.
doi:
10.3866/PKU.WHXB19870503
THERMAL DECOMPOSITION OF BIS (TRINITRO-ETHYL-N-NITRO) ETHANE
-
It has been found that the rate constant of thermal decomposition for various crystals of bis(trinitroethyl-N-nitro) ethane (BTNE) is quite different and, in effect, this difference in reactivity depends upon the process of recrystallization of the crystals. In this paper the crystal properties of BTNE have been investigated with such techniques as differential scanning calorimetry (DSC), X-ray powder diffraction and electronic scanning microscope (SEM). Each crystal modification shows a characteristic X-ray diffraction diagram and the transformation of one modification into another causes an endothermic peak on the curve of DSC. However, the DSC curves show that before the appearence of exothermic peak of de-composition the endothermic peak was not found for all samples of BTNE. The results of X-ray diffraction study of BTNE show an identical diffraction diagram. It demonstrates that the crystal modifications of the samples of BTNE are same.
The pictures taken with SEM for crystals of BTNE show fairly different crystal form and surface dislocations. In Fig.2, 3, 4, three typical SEM pictures of BTNE are illustrated. Fig.2 is a picture of BT-5. At a magnification of 6000X the crystal size of BT-5 is quite small, the crystal form is rectangular and rather tidy, and the surface of crystals is rather smooth. Fig.3 is a picture of BT-6. On the surface of crystal BT-6 many streak-form dislocations exist. There are distinct differences when compared with the surface of BT-5. Fig.4 is a picture of BT-3. The crystals of BT-3 look like brokendecaying pieces of wooden logs and on the end of crystal appear a lot of dislocations. Comparing the crystal form and dislocation with the corresponding curves of DSC, it has been seen that the crystals of BTNE having a smooth surface decompose slowly; on the contrry, crystals with rough surfaces dislocation decompose more quickly. In Table 1 the comparison of crystal properties with rate constant of thermal decomposition (at 120 ℃) is demonstrated.
It appears that the factors influencing the reactivity of various crystals of BTNE are the existence and degree of surface dislocation. From a view of solid reaction, the reaction of thermal decomposition for crystalline BTNE begins on the inter- or intrasurfaces. Reaction centres appear more readily at the places of surface dislocations. This means that crystals with more disloctions decompose quite easily and will demonstrate high rate constant of reaction. With a control over the recry-stllizing operation one can prepare BTNE crystals possessing various reactivities. Such peculiarities of crystalline BTNE as here descri bed seem to be worthy of further study. -
-
-
-
[1]
Yahui HAN , Jinjin ZHAO , Ning REN , Jianjun ZHANG . Synthesis, crystal structure, thermal decomposition mechanism, and fluorescence properties of benzoic acid and 4-hydroxy-2, 2′: 6′, 2″-terpyridine lanthanide complexes. Chinese Journal of Inorganic Chemistry, 2025, 41(5): 969-982. doi: 10.11862/CJIC.20240395
-
[2]
Jichao XU , Ming HU , Xichang CHEN , Chunhui WANG , Leichen WANG , Lingyi ZHOU , Xing HE , Xiamin CHENG , Su JING . Construction and hydrogen peroxide-activated chemodynamic activity of ferrocene?benzoselenadiazole conjugate. Chinese Journal of Inorganic Chemistry, 2025, 41(8): 1495-1504. doi: 10.11862/CJIC.20250144
-
[3]
Zhuo WANG , Junshan ZHANG , Shaoyan YANG , Lingyan ZHOU , Yedi LI , Yuanpei LAN . Preparation and photocatalytic performance of CeO2-reduced graphene oxide by thermal decomposition. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1708-1718. doi: 10.11862/CJIC.20240067
-
[4]
Shule Liu . Application of SPC/E Water Model in Molecular Dynamics Teaching Experiments. University Chemistry, 2024, 39(4): 338-342. doi: 10.3866/PKU.DXHX202310029
-
[5]
Yaling Chen . Basic Theory and Competitive Exam Analysis of Dynamic Isotope Effect. University Chemistry, 2024, 39(8): 403-410. doi: 10.3866/PKU.DXHX202311093
-
[6]
Yiying Yang , Dongju Zhang . Elucidating the Concepts of Thermodynamic Control and Kinetic Control in Chemical Reactions through Theoretical Chemistry Calculations: A Computational Chemistry Experiment on the Diels-Alder Reaction. University Chemistry, 2024, 39(3): 327-335. doi: 10.3866/PKU.DXHX202309074
-
[7]
Yeyun Zhang , Ling Fan , Yanmei Wang , Zhenfeng Shang . Development and Application of Kinetic Reaction Flasks in Physical Chemistry Experimental Teaching. University Chemistry, 2024, 39(4): 100-106. doi: 10.3866/PKU.DXHX202308044
-
[8]
Jinfu Ma , Hui Lu , Jiandong Wu , Zhongli Zou . Teaching Design of Electrochemical Principles Course Based on “Cognitive Laws”: Kinetics of Electron Transfer Steps. University Chemistry, 2024, 39(3): 174-177. doi: 10.3866/PKU.DXHX202309052
-
[9]
Shanghua Li , Malin Li , Xiwen Chi , Xin Yin , Zhaodi Luo , Jihong Yu . High-Stable Aqueous Zinc Metal Anodes Enabled by an Oriented ZnQ Zeolite Protective Layer with Facile Ion Migration Kinetics. Acta Physico-Chimica Sinica, 2025, 41(1): 100003-0. doi: 10.3866/PKU.WHXB202309003
-
[10]
Jiageng Li , Putrama . 数值积分耦合非线性最小二乘法一步确定反应动力学参数. University Chemistry, 2025, 40(6): 364-370. doi: 10.12461/PKU.DXHX202407098
-
[11]
Dexin Tan , Limin Liang , Baoyi Lv , Huiwen Guan , Haicheng Chen , Yanli Wang . Exploring Reverse Teaching Practices in Physical Chemistry Experiment Courses: A Case Study on Chemical Reaction Kinetics. University Chemistry, 2024, 39(11): 79-86. doi: 10.12461/PKU.DXHX202403048
-
[12]
Zhaoyang WANG , Chun YANG , Yaoyao Song , Na HAN , Xiaomeng LIU , Qinglun WANG . Lanthanide(Ⅲ) complexes derived from 4′-(2-pyridyl)-2, 2′∶6′, 2″-terpyridine: Crystal structures, fluorescent and magnetic properties. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1442-1451. doi: 10.11862/CJIC.20240114
-
[13]
Wenjie SHI , Fan LU , Mengwei CHEN , Jin WANG , Yingfeng HAN . Synthesis and host-guest properties of imidazolium-functionalized zirconium metal-organic cage. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 105-113. doi: 10.11862/CJIC.20240360
-
[14]
Yang ZHOU , Lili YAN , Wenjuan ZHANG , Pinhua RAO . Thermal regeneration of biogas residue biochar and the ammonia nitrogen adsorption properties. Chinese Journal of Inorganic Chemistry, 2025, 41(8): 1574-1588. doi: 10.11862/CJIC.20250032
-
[15]
Xingyuan Lu , Yutao Yao , Junjing Gu , Peifeng Su . Energy Decomposition Analysis and Its Application in the Many-Body Effect of Water Clusters. University Chemistry, 2025, 40(3): 100-107. doi: 10.12461/PKU.DXHX202405074
-
[16]
Limei CHEN , Mengfei ZHAO , Lin CHEN , Ding LI , Wei LI , Weiye HAN , Hongbin WANG . Preparation and performance of paraffin/alkali modified diatomite/expanded graphite composite phase change thermal storage material. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 533-543. doi: 10.11862/CJIC.20230312
-
[17]
Yuting Bai , Cenqi Yan , Zhen Li , Jiaqiang Qin , Pei Cheng . Preparation of High-Strength Polyimide Porous Films with Thermally Closed Pore Property by In Situ Pore Formation Method. Acta Physico-Chimica Sinica, 2024, 40(9): 2306010-0. doi: 10.3866/PKU.WHXB202306010
-
[18]
Yan Li , Xinze Wang , Xue Yao , Shouyun Yu . 基于激发态手性铜催化的烯烃E→Z异构的动力学拆分——推荐一个本科生综合化学实验. University Chemistry, 2024, 39(5): 1-10. doi: 10.3866/PKU.DXHX202309053
-
[19]
Yu Dai , Xueting Sun , Haoyu Wu , Naizhu Li , Guoe Cheng , Xiaojin Zhang , Fan Xia . Determination of the Michaelis Constant for Gold Nanozyme-Catalyzed Decomposition of Hydrogen Peroxide. University Chemistry, 2025, 40(5): 351-356. doi: 10.12461/PKU.DXHX202407052
-
[20]
Xuzhen Wang , Xinkui Wang , Dongxu Tian , Wei Liu . Enhancing the Comprehensive Quality and Innovation Abilities of Graduate Students through a “Student-Centered, Dual Integration and Dual Drive” Teaching Model: A Case Study in the Course of Chemical Reaction Kinetics. University Chemistry, 2024, 39(6): 160-165. doi: 10.3866/PKU.DXHX202401074
-
[1]
Metrics
- PDF Downloads(1702)
- Abstract views(1966)
- HTML views(7)