1) Fragmentation mechanism
裂解机理
1.
The mass spectrometric characteristics of phorate and two phosphorothioates are discussed and the chief fragments and fragmentation mechanism are identified with the interpretation of mass spectrum.
讨论了甲拌磷及两种硫代磷酸酯的质谱特性 ,并通过质谱解析对主要碎片和裂解机理加以证
2.
(1) the respective fragments m/z 176, 191, 192, 193, 161 are formed from molecular ion M~+ on the fragmentation mechanism via various cleavage modes; (2)the base peak at m/z 191 is formed with the loss of a neutral molecule via the ortho effect; (3) the base peak m/z 191 may further be cleaved to form fragments m/z 147, 132, 91; (4) the cleavage of C--N bond in si.
本文对2,6—双(二甲胺甲基)—4—乙基酚二盐酸盐这一对称型分子进行了精确质量和亚稳测定,证实了:(1)由分子离子M~+经过多种裂解方式,分别形成相应碎片m/z 176、191、192、193、161的裂解机理;(2)基峰m/z 191是由M~+通过邻位效应失去HN(CH_3)_2中性分子形成的;(3)基峰m/z 191可进一步裂解,通过多种途径形成m/z 147、132、91相应碎片;(4)苯环侧链胺基中C—N键的开裂与非对称型分子相似,而与脂肪胺中C—N键稳定不开裂的过程截然相反。
3.
Results show that the atom N is most likely to dissociate in neutral fragment forms of NH2,HCN,HCN2,N3 and N4,while the fragmentation mechanisms are the cleavage of C—N and N—N and the rearrangment.
根据质谱图中碎片离子的信息,总结了四氮烯的裂解途径,发现四氮烯裂解时主要有NH2、HCN、HCN2、N3、N4中性碎片的丢失,推测它的裂解机理是C—N、N—N键的断裂反应和分子内重排反应;同时发现四唑环碎片离子m/z68。
2) pyrolysis mechanism
热裂解机理
1.
Based on the thermodynamic data, the pyrolysis mechanism of the carbon matrix toluene used for carbon material was studied by dynamic computation using the UB3LYP/3-21G * method in the Gaussian 98 program package.
在热力学研究的基础上 ,用UB3LYP/3 - 2 1G 方法对甲苯热裂解机理进行了动力学研究 。
2.
As far as the practical need of Rapid Densification Process of preparing Carbon/Carbon composites was concerned, a theoretical research of the pyrolysis mechanism for three sorts of carbon matrix compounds, including ethylbenzene, p-xylene and cyclohexane, was carried out.
以碳/碳(C/C)复合材料快速液相沉积法致密化工艺(RD)的实际需要为出发点,在前期研究的基础上,选择了三种碳源化合物(乙苯、对二甲苯、环已烷)作为研究对象,对其热裂解机理进行了详细的研究,以期了解更多碳源化合物的热裂解机理。
4) reaction pyrolysis mechanism
裂解-反应机理
5) Thermal dewmposition mechanism
裂解阻燃机理
6) Ms cleavage mechanism
质谱裂解机理
补充资料：蒸汽裂解轻芳烃的石脑油与富含1,3-戊二烯蒸汽裂解轻芳烃的石脑油和蒸汽裂解中芳烃的石脑油的聚合物
CAS：68527-25-3
中文名称：蒸汽裂解轻芳烃的石脑油与富含1,3-戊二烯蒸汽裂解轻芳烃的石脑油和蒸汽裂解中芳烃的石脑油的聚合物
英文名称：Naphtha, petroleum, light steam-cracked arom., polymer with light steam-cracked arom. petroleum naphtha piperylene conc. and medium steam-cracked arom. petroleum naphtha
naphtha (petroleum), light steam-cracked arom.,polymer with light steam-cracked arom. petroleum naphtha piperyleneconc. and medium steam-cracked arom. petroleum naphtha
Naphtha,petroleum,light steam-cracked arom.,polymer with light steam-cracked arom. petroleum naphtha piperylene conc. and medium steam-cracked arom. petroleum naphtha
中文名称：蒸汽裂解轻芳烃的石脑油与富含1,3-戊二烯蒸汽裂解轻芳烃的石脑油和蒸汽裂解中芳烃的石脑油的聚合物
英文名称：Naphtha, petroleum, light steam-cracked arom., polymer with light steam-cracked arom. petroleum naphtha piperylene conc. and medium steam-cracked arom. petroleum naphtha
naphtha (petroleum), light steam-cracked arom.,polymer with light steam-cracked arom. petroleum naphtha piperyleneconc. and medium steam-cracked arom. petroleum naphtha
Naphtha,petroleum,light steam-cracked arom.,polymer with light steam-cracked arom. petroleum naphtha piperylene conc. and medium steam-cracked arom. petroleum naphtha
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条