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1. (WO2018036361) PHOSPHOTUNGSTIC ACID PREPARATION METHOD
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Pub. No.: WO/2018/036361 International Application No.: PCT/CN2017/095790
Publication Date: 01.03.2018 International Filing Date: 03.08.2017
IPC:
C01G 41/00 (2006.01) ,B01J 27/199 (2006.01) ,C30B 29/10 (2006.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
G
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
41
Compounds of tungsten
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
27
Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
14
Phosphorus; Compounds thereof
186
with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
195
with vanadium, niobium or tantalum
198
Vanadium
199
with chromium, molybdenum, tungsten or polonium
C CHEMISTRY; METALLURGY
30
CRYSTAL GROWTH
B
SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
29
Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
10
Inorganic compounds or compositions
Applicants:
中南大学 CENTRAL SOUTH UNIVERSITY [CN/CN]; 中国湖南省长沙市 岳麓区麓山南路932号 No.932 South Lushan Road, Yuelu District Changsha, Hunan 410083, CN
Inventors:
赵中伟 ZHAO, Zhongwei; CN
李永立 LI, Yongli; CN
Agent:
长沙市融智专利事务所 CHANGSHA RONG ZHI PATENT AGENCY; 中国湖南省长沙市 雨花区人民中路308号魏娟 WEI, Juan No.308 Renmin Road, Yu Hua District Changsha, Hunan 410011, CN
Priority Data:
201610742240.826.08.2016CN
201610742490.126.08.2016CN
201610743022.626.08.2016CN
201610743870.726.08.2016CN
201610743901.926.08.2016CN
Title (EN) PHOSPHOTUNGSTIC ACID PREPARATION METHOD
(FR) PROCÉDÉ DE PRÉPARATION D'ACIDE PHOSPHOTUNGSTIQUE
(ZH) 一种磷钨酸的制备方法
Abstract:
(EN) Provided is a phosphotungstic acid preparation method. The method comprises: mixing a mixed solution comprising tungsten, phosphorus and an inorganic acid and an oil phase comprising organic alcohol, carrying out extraction, and carrying out stripping on an obtained loaded organic phase and distilled water according to a volume ratio of 3:1-10:1 between the oil phase and an aqueous phase, so as to obtain a strip liquor; and carrying out evaporative crystallization or spray drying on the strip liquor to obtain phosphotungstic acid crystals, the organic alcohol being C7-C20 alcohol. By means of the method, high-efficiency synchronous extraction of phosphotungstic acid can be implemented; stripping is carried out by using distilled water, and the stripped organic phase is not doped with impurities and can be directly recycled.
(FR) L'invention concerne un procédé de préparation d'acide phosphotungstique. Le procédé comprend : le mélange d'une solution mixte comprenant du tungstène, du phosphore et un acide inorganique et d'une phase huileuse comprenant de l'alcool organique, la réalisation d'une extraction, et la réalisation d'un décapage sur une phase organique chargée obtenue et de l'eau distillée selon un rapport volumique de 3:1-10:1 entre la phase huileuse et une phase aqueuse, de manière à obtenir une liqueur de décapage; et effectuer une cristallisation par évaporation ou un séchage par pulvérisation sur la liqueur de décapage pour obtenir des cristaux d'acide phosphotungstique, l'alcool organique étant un alcool en C7-C20. Au moyen de ce procédé, une extraction synchrone à haut rendement d'acide phosphotungstique peut être mise en œuvre; le décapage est effectué en utilisant de l'eau distillée, et la phase organique décapée n'est pas dopée avec des impuretés et peut être directement recyclée.
(ZH) 提供一种磷钨酸的制备方法,包括将包含钨、磷和无机酸的混合溶液与含有机醇的油相混合进行萃取,随后将得到的负载有机相与蒸馏水按油相:水相体积比为3∶1-10∶1进行反萃,得反萃液;反萃液经热蒸发结晶或喷雾干燥,得到磷钨酸晶体;所述的有机醇为C7~C20醇。该方法可实现磷钨酸的同步、高效萃取,并且采用蒸馏水进行反萃,反萃后的有机相不掺杂有杂质,可直接循环套用。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Chinese (ZH)
Filing Language: Chinese (ZH)