天然红宝石结构的原位漫反射中红外光谱研究  

In Situ Diffuse Reflection Middle Infrared Spectroscopy Study of Natural Ruby Structure

作　　者：于宏伟[1] 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)

机构地区：[1]石家庄学院化工学院,石家庄050035

出　　处：《玻璃搪瓷与眼镜》2024年第4期10-14,共5页Glass Enamel & Ophthalmic Optics

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.

关 键 词：红宝石 原位漫反射 红外光谱 α-Al_(2)O_(3) Cr_(2)O_(3) Fe_(2)O_(3) 锌尖晶石 

分 类 号：O434.3[机械工程—光学工程]