Detail of "13093-17-9"

Reference

Method for removing sulfur from cerium compound used as intermediate in ceric ammonium nitrate preparation

Method for removing sulfur from cerium compound used as intermediate in ceric ammonium nitrate preparation. Kim, Gang Seok (Il Dong Chemical Co., Ltd., S. Korea). Repub. Korean Kongkae Taeho Kongbo KR 2002034683 A 9 May 2002, No pp. given (Korean). (Korea, Republic Of). CODEN: KRXXA7. CLASS: ICM: C01F017-00. APPLICATION: KR 2000-65147 3 Nov 2000. DOCUMENT TYPE: Patent CA Section: 49 (Industrial Inorganic Chemicals) A method for removing sulfur from a cerium salt used as an intermediate in the prepn. of ceric ammonium nitrate is decribed which uses the addn. of ammonia water.Several substances with their cas registry numbers 1336-21-6 and 13093-17-9 may be metioned in this study. As a result, the prepd. ceric ammonium nitrate, (NH4)2Ce(NO3)6, has a high purity. The sulfur removal method is as follows: the addn. of deionized water at 0.5-10 times, preferably 1-3 times, as much as the cerium compd. to the cerium salt, Ce(OH)x(NO3)y + nH2O (y > 0, x + y = 4, n is an integer 3 0), and stirring to obtain the cerium compd. sol; adding 18-20% of ammonia water to adjust the pH of the sol to between 10-11, which is represented by the formula, Ce(OH)x(NO3)y + nNH4OH --> Ce(OH)4 + nNH4NO3, and the sulfur contained in the cerium compd. is converted into ammonium sulfate; washing the reaction product (ppt.) with deionized water to remove (NH4)2SO4 and adjusting the pH of the ppt. to between 7-8. .

Low-temperature combustion synthesis method for preparing sulfide upconversion luminescent material

All Rights Reserved. Low-temperature combustion synthesis method for preparing sulfide upconversion luminescent material. Lu, Liping; Zhang, Xiyan; Bai, Chaohui; Mi, Xiaoyun; Liu, Quansheng; Wang, Xiaochun (Changchun University of Science and Technology, Peop. Rep. China). Faming Zhuanli Shenqing Gongkai Shuomingshu CN 1876757 A 13 Dec 2006, 8pp. (Chinese). (People's Republic of China). CODEN: CNXXEV. APPLICATION: CN 2010-103418 20 Jul 2006. DOCUMENT TYPE: Patent CA Section: 73 (Optical, Electron, and Mass Spectroscopy and Other Related Properties) The title method comprises: (1) weighing rare earth oxide Eu2O3 or CeO2 and Sm2O3, dissolving into nitric acid to obtain nitrate soln. resp., and mixing to obtain mixed soln., (2) dissolving alkali metal nitrate Ca(NO3)2·4H2O or Sr(NO3)2 and org. fuel into the obtained mixed rare earth nitrate soln., standing to clarify, adding sulfur powder, and mixing to obtain fuel slurry, or heating the obtained mixed rate earth nitrate soln. 13093-17-9 and 1308-96-9 are cas registry numbers of chemicals which are used as reagents here. to obtain conc. soln., dissolving alkali metal nitrate Ca(NO3)2·4H2O or Sr(NO3)2, org. fuel, and sulfur powder into the concd. soln., and repeatedly grinding to obtain fuel blank, and (3) adding the obtained fuel slurry or fuel blank into a furnace cavity preheated to 500-600°C, combusting while emitting large quantities of energy and gases for 3-5 min, cooling, and taking out to obtain the final product of fluffy multilayer sheet powder. The obtained sulfide upconversion luminescent material avoids disadvantages of high-temp. solid phase method of high temp., long reaction time, and large grain size, and has the advantages of high efficiency, saved energy, convenient operation, small grain size of up to nanometer scale, low IR response threshold value, and broadband IR upconversion effect, and has universality for detection of IR light with wavelength of 810-1,550 nm. .