Study On Structure Of SbSn Intermetallic Compound And Its Using In Modification Of Petroleum

With the development of economy, crude oil plays a more and more important role in the agriculture and industry, but the quality of crude oil is becoming poor, and the content of sulfur and heavy metal is increasing continuously, which brings trouble to the follow-up process of crude oil, and polluted the environment badly. On the other hand, the standards of international community to environmental protection trend towards more strict, and the prescriptive value of the sulfur content in crude oil products are becoming lower and lower. The causes from the above two sides urged the development of the desulfurization technology. Developing a new technology of desulfurization is a focus in the crude oil processing industry, and finding a new desulfurization material and process is a very meaningful work.Intermetallic compound SbSn was prepared by using different non-equilibrium solidification methods and conditions using Sb and Sn as raw materials. The prepared materials were analyzed and characterized by modern analytical techniques, such as DSC, XRD, XPS, and AES etc. The effection of decreasing the contents of asphaltene, S and heavy metal in crude oil by using the prepared materials was investigated. The following results have been obtained.1. Melt superheat treatment was studied and the transformation of mixture of Sb and Sn with the temperature increasing was characterized by DSC. Result revealed that the mixture of Sb and Sn with a molar proportion of 1:1 has a change of liquid microstructure at about 900℃, which is far above the melting point of Sb or Sn, moreover Sn has a liquid micro structural change at about 970℃. The crystal structures of SbSn prepared at different melting temperatures were not the same. SbSn prepared by melting spraying quencher at the melting temperatures of 750℃is hexagonal crystal, while SbSn prepared at the melting temperatures of 950℃is trigonal crystal. According to the space lattice and crystal lattice parameters given by stand atlas of XRD, the monocrystalline space lattice model of SbSn was obtained using Materials Studio 3.0.1, and XRD pattern of it was calculated. The calculated...