高温高压条件下碳氢化合物的合成

项目名称： 高温高压条件下碳氢化合物的合成

项目编号： No.11504382

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 姜树清

作者单位： 中国科学院合肥物质科学研究院

项目金额： 24万元

中文摘要： 高温高压条件下碳氢化合物的合成研究对人们深入了解物质在极端条件下的物性，揭示有机物的来源方面有着重要意义，这一研究也不断推动着高温高压实验技术的发展。然而，前人实验研究中由于温度-压力条件较低，仅合成了CH4和C2H6两种有机物，其合成条件和反应机制的研究也不完善；此类实验中温度的同步测量和生成物的原位鉴定两大技术难题没有得到解决。本项目拟利用先进的高温高压原位拉曼光谱测量平台对碳氢化合物的合成展开研究。具体包括：1、拓展极端实验条件范围至0-30 GPa，300-3000 K，利用更高压力，温度条件合成多种碳氢化合物；2、利用先进系统实现对温度、压力精确测量和生成物的原位鉴定；检验已知低温低压条件下CH4两种合成路径及其区间，探索极端压力下可能存在的其他合成机制；确定C2H6的合成条件和机制，以及复杂碳氢化合物合成过程中的奇特物理化学行为，建立温度-压力-生成物的一一对应关系。

中文关键词： 金刚石对顶砧；高温；高压；碳氢化合物；合成

英文摘要： The synthesis research of hydrocarbons under high pressure and high temperature has important significance in understanding the physical property of materials at extremely conditions and revealing the origin the organics, which is also improving the experiment technology in the laboratory. However, only CH4 and C2H6 were synthetic in the previous experiments during the low-pressure and low-temperature conditions, and the synthesis routes and mechanisms are also incomplete. The synchronous temperature measurement and in situ identification of products are still the technological problem which restricting the experimental studies in this field. In this proposal, the proposed synthesis research of hydrocarbons will be carried out on the advanced integrated experimental platform of high-pressure high-temperature in situ Raman spectroscopy measurement system. The research includes: 1. Extend the extreme conditions to the region of 0-30 GPa and 300-3000 K, so as to get more hydrocarbons using high-pressure and high-temperature methods; 2. Realizing the synchronous temperature measurement and in situ identification of products with the advanced system; reexamining the reported two reaction paths and boundary of CH4 at low pressure and temperature and searching for the possible other paths in the synthesis of CH4 under higher pressure; confirm the synthesis routes and mechanisms of C2H6, and the novel physics and chemistry phenomenon in the synthesis of complex hydrocarbons. Finally we will establish the one-to-one mapping between pressure, temperature and products.

英文关键词： Diamond anvil cell;High temperature;High pressure;Hydrocarbons;Synthesis