摘要
利用原位漫反射中红外光谱研究天然红宝石的结构,发现红宝石结构的红外吸收模式主要包括:α-Al_(2)O_(3)分子中O^(2-)对静止Al^(3+)位移对应的红外吸收模式(ν_(α-Al_(2)O_(3)-O-Al))、Cr_(2)O_(3)分子中O^(2−)对静止Cr^(3+)位移对应的红外吸收模式(ν_(Cr_(2)O_(3)-O-Cr))、Fe_(2)O_(3)分子中O_(2)−对静止Fe3+位移对应的红外吸收模式(ν_(Fe_(2)O_(3)-O-Fe))、α-Al_(2)O_(3)分子中Al^(3+)之间位移对应的红外吸收模式(ν_(α-Al_(2)O_(3)-Al-Al))及锌尖晶石特征红外吸收模式(νZnAl_(2)O4);红宝石的主要结构包括:α-Al_(2)O_(3)、Cr_(2)O_(3)、Fe_(2)O_(3)及少量共生锌尖晶石。采用原位漫反射中红外光谱,研究小颗粒红宝石类矿物结构具有重要的应用价值。
The structure of natural Ruby was studied by In-situ diffuse reflectance middle infrared spectroscopy.The experiment found that the main infrared absorption modes of ruby include the infrared absorption mode corresponding to the displacement of O^(2-)ions inα-Al_(2)O_(3) molecules towards stationary Al^(3+)ions(ν_(α-Al_(2)O_(3)-O-Al)),the infrared absorption mode corresponding to the displacement of O_(2)−ions in Cr_(2)O_(3) molecules towards stationary Cr^(3+)ions(ν_(Cr_(2)O_(3)-O-Cr)),the infrared absorption mode corresponding to the displacement of O_(2)−ions in Fe_(2)O_(3) molecules towards stationary Fe^(3+)ions(ν_(Fe_(2)O_(3)-O-Fe)),and the infrared absorption mode corresponding to the displacement correspondence between Al^(3+)ions inα-Al_(2)O_(3) molecules(ν_(α-Al_(2)O_(3)-Al-Al))and characteristic infrared absorption mode of gahnite(ν_(ZnAl_(2)O4)).Ruby structure mainly includes:α-Al_(2)O_(3),Cr_(2)O_(3),Fe_(2)O_(3),and a small amount of coexisting gahnite.In situ diffuse reflectance middle infrared spectroscopy is of great value in studying the structure of small Ruby like minerals.
作者
于宏伟
柴嘉欣
吉一帆
宗雪晴
张泽旺
吴雨靓
YU Hongwei;CHAI Jiaxin;JI Yifan;ZONG Xueqing;ZHANG Zewang;WU Yuliang(School of Chemical Engineering Shijiazhuang College,Shijiazhuang 050035,China)
出处
《玻璃搪瓷与眼镜》
CAS
2024年第4期10-14,共5页
Glass Enamel & Ophthalmic Optics
