无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ
环境·健康·安全

二水硫酸钙间接矿化二氧化碳CTAB对碳酸钙晶型的影响

  • 王刚 ,
  • 唐盛伟 ,
  • 陈彦逍 ,
  • 张涛
展开
  • 1. 四川大学化学工程学院,四川成都 610065
    2. 教育部磷资源综合利用与清洁加工工程中心
王刚(1992— ),男,硕士研究生,研究方向为化工(含冶金)新技术新工艺开发;E-mail:1533784485@qq.com。

收稿日期: 2019-09-26

  网络出版日期: 2020-03-31

基金资助

国家重点基础研发计划项目(2016YFB0600904)

Effect of CTAB on crystal form of CaCO3 in indirect mineralization of CO2 by CaSO4·2H2O

  • Gang Wang ,
  • Shengwei Tang ,
  • Yanxiao Chen ,
  • Tao Zhang
Expand
  • 1. School of Chemical Engineering,Sichuan University,Chengdu 610065,China
    2. MOE′s Research Center for Comprehensive Utilization and Clean Processing Engineering of Phosphorus Resources;

Received date: 2019-09-26

  Online published: 2020-03-31

摘要

提升产品附加值对改善二氧化碳矿化过程的经济性具有重要意义。在二水硫酸钙与碳酸铵溶液进行间接矿化反应过程中,采用十六烷基三甲基溴化铵(CTAB)为晶型调节剂,可以获得球霰石晶型的碳酸钙。系统研究了反应时间、反应温度、CTAB加入量对碳酸钙晶型和形貌的影响,通过X射线衍射(XRD)、扫描电镜(SEM)和红外光谱(FT-IR)对碳酸钙的晶型、形貌进行了表征。结果表明:反应过程为先形成亚稳定相的球霰石,再向热力学最稳定的方解石相转化;添加CTAB能够明显地增强球霰石的稳定性;较低温度有利于球霰石的形成;在反应温度为30 ℃、二水硫酸钙和碳酸铵加入量均为0.1 mol/L、CTAB加入量为0.54 mmol/L条件下,碳酸钙中球霰石占比高达80%以上;CTAB在球霰石表面上的吸附降低了其表面能,从而抑制了球霰石向方解石的转化。

本文引用格式

王刚 , 唐盛伟 , 陈彦逍 , 张涛 . 二水硫酸钙间接矿化二氧化碳CTAB对碳酸钙晶型的影响[J]. 无机盐工业, 2020 , 52(3) : 75 -79 . DOI: 10.11962/1006-4990.2019-0224

Abstract

Increasing the added value of products is of great significance for improving the economy of CO2 mineralization process.In the indirect mineralization process of calcium sulfate dihydrate and ammonium carbonate solution,cetyltrimethy-lammonium bromide(CTAB) was used as the crystal regulator to obtain calcium carbonate composed of vaterite crystal form. The effects of reaction time,reaction temperature and the dosage of CTAB on the crystal and morphology of calcium carbonate were studied systematically.The crystal and morphology were characterized by XRD,SEM and FT-IR.The results showed that the reaction process begined with the formation of metastable phase vaterite which continued to convert to calcite with the highest thermodynamic stability.The addition of CTAB can significantly enhance the stability of vaterite; lower temperature was beneficial to form vaterite;when the reaction temperature was 30 ℃,CaSO4·2H2O solid powder and(NH42CO3 solution were both 0.01 mol/L and CTAB was 0.54 mmol/L,the proportion of vaterite in the product was higher than 80%.The adsorption of CTAB on the product surface reduced the surface energy and inhibited the conversion of vaterite to calcite.

参考文献

[1] Falkowski P, Scholes R J, Boyle E , et al. The global carbon cycle:A test of our knowledge of earth as a system[J]. Science, 2000,290(5490):291-296.
[2] Rashidi N A, Yusup S . An overview of activated carbons utilization for the post-combustion carbon dioxide capture[J]. Journal of CO2 Utilization, 2016,13:1-16.
[3] 朱家骅, 谢和平, 夏素兰 , 等. 烟气二氧化碳与磷石膏转化一步法节能节水清洁工艺:中国,102836627A[P]. 2012-12-26.
[4] Wang A H, Yang Y, Zhang X M , et al. Gelatin-assisted synjournal of vaterite nanoparticles with higher surface area and porosity as antic-ancer drug containers in vitro[J]. Chempluschem, 2016,81(2):194-201.
[5] Qiu N, Yin H B, Ji B Z , et al. Calcium carbonate microspheres as carriers for the anticancer drug camptothecin[J]. Materials Science and Engineering C, 2012,32(8):2634-2640.
[6] 徐国峰, 王洁欣, 沈志刚 , 等. 单分散纳米碳酸钙的制备和表征[J]. 北京化工大学学报:自然科学版, 2009,36(5):27-30.
[7] Kang S H, Hirasawa I, Kim W S , et al. Morphological control of calci-um carbonate crystallized in reverse micelle system with anionic surfactants SDS and AOT[J]. Journal of Colloid and Interface Scien-ce, 2005,288(2):496-502.
[8] Walsh D, Lebeau B, Mann S . Morphosynjournal of calcium carbonate (vaterite) microsponges[J]. Advanced Materials, 1999,11(4):324-328.
[9] Li Q, Ding Y, Li F Q , et al. Solvothermal growth of vaterite in the presence of ethylene glycol,1,2-propanediol and glycerin[J]. Jo-urnal of Crystal Growth, 2002,236(1):357-362.
[10] Zhao Y, Li S, Yu L , et al. The preparation of calcium carbonate cry-stals regulated by mixed cationic/cationic surfactants[J]. Journal of Crystal Growth, 2011,324(1):278-283.
[11] Zhao L, Wang J . Biomimetic synjournal of hollow microspheres of calcium carbonate crystals in the presence of polymer and surfa-ctant[J]. Colloids and Surfaces A:Physicochemical and Engineer-ing Aspects, 2012,393:139-143.
[12] Saikia J, Saha B, Das G . Morphosynjournal of framboidal stable vate-rite using a salicylic acid-aniline dye as an additive[J]. RSC Adv-ances, 2012,2(26):10015-10019.
[13] Chen J, Xiang L . Controllable synjournal of calcium carbonate poly-morphs at different temperatures[J]. Powder Technology, 2009,189(1):64-69.
[14] Danielik V, Fellner P, Juri?ová J , et al. Kinetics of the conversion reaction of gypsum with ammonium carbonate[J]. Chemical Pa-pers, 2018,72(10):2631-2639.
[15] 郭祥峰, 贾丽华 . 阳离子表面活性剂及应用[M]. 北京: 化学工业出版社, 2002.
文章导航

/