论文部分内容阅读
地矿部海洋地质所~(14)C实验室筹建于1982年8月,次年10月建成化学制样玻璃真空系统,1984年10月正式发表数据.本报告公布的130个年代数据系1984—1987年测试样品的一部分,测试样品多为碳酸盐和粘土,采用液体闪烁技术测量,本室代号为HD.样品的予处理和化学制备基本与文献一致.有机样品通氧燃烧,无机样品用6N盐酸酸解,制取CO_2;CO_2气体在玻璃真空系统中用干冰—丙酮,液氮冷阱和真空泵抽气纯化;纯化后的CO_2和不锈钢反应器内加热至700℃的金属理反应生成碳化锂将合成的碳化锂进行水解,水解生成的乙炔经数次冷冻抽气纯化,于120℃时在经过再生的含铬硅铝球催化剂上聚合成苯.合成的苯经气相色谱分析,纯度可达到市售优级纯苯的标准.
The Ministry of Geology and Mineral Resources Marine Geology (14) C Laboratory was established in August 1982, the following year in October completed a chemical sample glass vacuum system, published in October 1984. The 130 published data in this report 1984 - 1987 part of the test sample, the test samples are mostly carbonate and clay, using liquid scintillation measurement, the chamber code-named HD. Sample pretreatment and chemical preparation basically consistent with the literature. Organic samples through oxygen combustion, inorganic samples CO_2 gas was purified by 6N hydrochloric acid solution in a glass vacuum system with dry ice-acetone, liquid nitrogen cold trap and vacuum pump. The purified CO_2 and the metal reaction heated to 700 ℃ in a stainless steel reactor Lithium carbide is hydrolyzed by lithium carbide, the acetylene produced by the hydrolysis is purified by several freeze-thawing cycles and polymerized into benzene on a regenerated chromia-alumina-silica catalyst at 120 DEG C. The synthesized benzene is analyzed by gas chromatography to determine the purity Can reach the level of pure benzene market standards.