Study of K-Feldspar and Lime Hydrothermal Reaction at 190 degrees C: Phase, Kinetics and Mechanism with Reaction Time

doi:10.1002/slct.201802763

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院矿产资源研究重点实验室

	Study of K-Feldspar and Lime Hydrothermal Reaction at 190 degrees C: Phase, Kinetics and Mechanism with Reaction Time
	Liu, Shanke 1,2; Han, Cheng 1,2; Liu, Jianming 1,2
刊名	CHEMISTRYSELECT
	2018-12-13
卷号	3 期号:46 页码:13010-13016
关键词	hydrothermal reaction K-feldspar kinetics mechanism phase
ISSN号	2365-6549
DOI	10.1002/slct.201802763
英文摘要	An artificial silicate composite material prepared by the hydrothermal reaction of K-feldspar and lime, showed excellent performance in remediating the soil. To elucidate the physicochemical properties of the artificial silicate composite material, K-feldspar and lime were reacted in mild hydrothermal conditions (T=190 degrees C; P similar to 12.4 atm; t=0 similar to 36 h). The hydrothermal product was systematically investigated using various techniques such as X-ray powder diffraction (XRPD), scanning electron microscopy, and inductively coupled plasma-optical emission spectrometry (ICP-OES). Quantitative evaluation of the extent of reaction by ICP-OES and XRPD methods enabled the analysis of hydrothermal evolution with prolonged time. The hydrothermal treatment of K-feldspar with lime exhibits complex product phases, including leftover K-feldspar, calcium hydroxide, calcite, grossular, tobermorite, alpha-dicalcium silicate hydrate, potassium carbonate, butschliite, and amorphous calcium silicate hydrate. The analysis of the reaction reveals that the K-feldspar dissolution showed a clear transition, with the hydrothermal reaction beginning to slow down after 20 h. The slowdown of the K-feldspar dissolution was essentially caused by different reaction kinetics and mechanisms before and after 20 h. The study yields vital and valuable insights into comprehending the chemistry and mineralogy of the artificial silicate composite material and producing a multielement reservoir from potassium-rich rocks.
资助项目	National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China)[2006BAD10B04] ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China[2007EA173003]
WOS关键词	QUARTZ PARTICLE-SIZE ; HYDROGARNET FORMATION ; POTASSIUM-FELDSPAR ; CALCIUM ; 180-DEGREES-C ; DECOMPOSITION ; TOBERMORITE ; FERTILIZER ; SYSTEM
WOS研究方向	Chemistry
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000453576900004
资助机构	National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; National Science & Technology Pillar Program during the Eleventh Five-Year Plan Period (China) ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China ; Knowledge Innovation Project of Chinese Academy of Sciences and Spark Program of China
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90286]
专题	地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者	Liu, Shanke
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Liu, Shanke,Han, Cheng,Liu, Jianming. Study of K-Feldspar and Lime Hydrothermal Reaction at 190 degrees C: Phase, Kinetics and Mechanism with Reaction Time[J]. CHEMISTRYSELECT,2018,3(46):13010-13016.
APA	Liu, Shanke,Han, Cheng,&Liu, Jianming.(2018).Study of K-Feldspar and Lime Hydrothermal Reaction at 190 degrees C: Phase, Kinetics and Mechanism with Reaction Time.CHEMISTRYSELECT,3(46),13010-13016.
MLA	Liu, Shanke,et al."Study of K-Feldspar and Lime Hydrothermal Reaction at 190 degrees C: Phase, Kinetics and Mechanism with Reaction Time".CHEMISTRYSELECT 3.46(2018):13010-13016.