CAJ | 학술논문

利用高温拉曼光谱技术,对异极矿进行了原位拉曼光谱的测试和研究.结果表明,异极矿加热至800 K时,与结晶水(H_2O)中O-H伸缩振动对应的3 470 cm~(-1)特征拉曼谱峰消失,但标志硅酸盐骨架[Si_2O_7] (Q_1)结构的特征谱峰926 cm~(-1)未受影响,表明结晶水的丢失并不影响异极矿的整体结构.当加热至1 050 K,反映结构水O-H伸缩振动的特征峰3 580 cm~(-1)消失,与Q1结构单元Si-O_(nb)对称伸缩振动相对应的特征峰926 cm~(-1)强度逐渐减小,并出现与Q_0相对应的852.4 cm~(-1)特征峰.这表明加热到1 050 K时,异极矿开始出现相变.当升温达1 100 K以上,结构水(OH)的特征谱峰(3 580 cm~(-1))消失,与Si-O_(nb)对称伸缩振动对应的特征拉曼谱峰变为855 cm~(-1),这标志着异极矿原有的Q1结构已完全转变为硅锌矿的Q_0结构 ([SiO4]结构),也就是说异极矿已完成向硅锌矿的转变.
이용고온랍만광보기술,대이겁광진행료원위랍만광보적측시화연구.결과표명,이겁광가열지800 K시,여결정수(H_2O)중O-H신축진동대응적3 470 cm~(-1)특정랍만보봉소실,단표지규산염골가[Si_2O_7] (Q_1)결구적특정보봉926 cm~(-1)미수영향,표명결정수적주실병불영향이겁광적정체결구.당가열지1 050 K,반영결구수O-H신축진동적특정봉3 580 cm~(-1)소실,여Q1결구단원Si-O_(nb)대칭신축진동상대응적특정봉926 cm~(-1)강도축점감소,병출현여Q_0상대응적852.4 cm~(-1)특정봉.저표명가열도1 050 K시,이겁광개시출현상변.당승온체1 100 K이상,결구수(OH)적특정보봉(3 580 cm~(-1))소실,여Si-O_(nb)대칭신축진동대응적특정랍만보봉변위855 cm~(-1),저표지착이겁광원유적Q1결구이완전전변위규자광적Q_0결구 ([SiO4]결구),야취시설이겁광이완성향규자광적전변.
An in-situ Raman spectra test and study on the hemimorphite were carried out by high temperature Raman spectra technique. The test results show that the characteristic Raman peak of 3,470 cm~(-1) representing O-H stretching vibration in the molecular H_2O is disappeared as the hemimorphite being heated 800 K, but the characteristic peak 926 cm~(-1) marked Q1 of the main framework [Si_2O_7] is been retained, which means the structure of the hemimorphite is not changed as the H_2O lost. The characteristic peak of 3,580 cm~(-1) related to stretching vibration of the O-H in the structure water (OH) is disappeared as the sample being heated 1,050 K.The relative intensity of the characteristic peak 926 cm~(-1) related to symmetric stretching vibration of non-bridging oxygen of structure unit Q1 gradually decreases, comparing with the growing Raman band of Q_0 characteristic peak at 852.4 cm~(-1),which indicates the phase transformation of the hemimorphite is started out at 1,050 K. The structure water (OH) is dehydrated completely as the temperature is over 1,100 K, the characteristic peak (3,580 cm~(-1)) of the structure water (OH) disappears completely, the characteristic peak related to Si-O_(nb) stretching vibration becomes 855 cm~(-1), which shows that primary Q1 of the hemimorphite is returned to Q_0 (i.e. [SiO4] ), and which means that the hemimorphite is completely transformed to willemite.