Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of preparation method of yttrium lutetium cerium oxide for scintillation crystal

A scintillation crystal, yttrium oxide technology, applied in rare earth metal oxide/hydroxide and other directions, can solve the problems of restricting the application and development of downstream industries, unreasonable product cost performance, unclear rare earth oxide product standards, etc. Controlled equipment, low cost and uniform distribution of rare earth elements

Active Publication Date: 2021-11-12
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of scintillation crystals with this rare earth mixture has problems such as unclear product standards of rare earth oxides, blind pursuit of high purification, and unreasonable product cost performance, which restricts its application and development in downstream industries.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of yttrium lutetium cerium oxide for scintillation crystal
  • A kind of preparation method of yttrium lutetium cerium oxide for scintillation crystal
  • A kind of preparation method of yttrium lutetium cerium oxide for scintillation crystal

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The preparation method of yttrium lutetium cerium oxide for scintillation crystal of the present invention, wherein the general chemical formula of yttrium lutetium cerium oxide is: (Y y Lu (1-x-y) ) 2 o 3 : xCe, where x=0.001~0.01, y=0.05~0.3;

[0030] Step 1: According to the stoichiometric ratio of the three rare earth elements of yttrium, lutetium and cerium in the general chemical formula, mix the hydrochloric acid or nitric acid stripping solution of the three rare earth ions evenly, adjust the pH of the solution to 2-3 with ammonia water, and heat to 80°C , to obtain a solution.

[0031] Step 2: prepare an oxalic acid solution according to the molar ratio of the rare earth to the precipitating agent oxalic acid of 1:1.8-2.2, and heat the oxalic acid solution to 80°C to obtain b solution;

[0032] Step 3: under stirring conditions, slowly add solution a to solution b, stir for 30 minutes, leave to age for 3 to 6 hours, and filter to obtain the precipitate of y...

Embodiment 1

[0035] Embodiment 1 (Y 0.15 Lu 0.849 ) 2 o 3 :1‰Ce preparation

[0036] According to yttrium, lutetium and cerium accounting for 15%, 84.9% and 0.1% of the total rare earth, mix the yttrium chloride, lutetium chloride and cerium chloride stripping solution with the total rare earth being 0.01mol evenly, and adjust the pH value of the solution with ammonia water 2.00, heat the solution to 80°C; prepare 0.018mol oxalic acid solution, heat the solution to 80°C; under the condition of magnetic stirring, slowly add the above mixed rare earth solution into the oxalic acid solution, stir for 30min, and let it stand for 3h; Precipitate and filter to obtain solid yttrium-lutetium-cerium oxalate, and burn in a muffle furnace at 900°C for 3 hours to obtain yttrium-lutetium-cerium oxide powder. figure 1 The XRD pattern of this sample is consistent with the JCPDS standard card (43-1021) of lutetium oxide. figure 2 For the SEM of this sample, image 3 is the mapping spectrum of the s...

Embodiment 2

[0037] Embodiment 2 (Y 0.05 Lu 0.945 ) 2 o 3 :5‰Ce preparation

[0038] According to yttrium, lutetium and cerium accounting for 5%, 94.5% and 0.5% of the total rare earth, the total rare earth is 0.01mol yttrium chloride, lutetium chloride and cerium chloride stripping solution are mixed evenly, and the pH value of the solution is adjusted with ammonia water To 3.00, heat the solution to 80°C; prepare 0.02mol oxalic acid solution, heat the solution to 80°C; under the condition of magnetic stirring, slowly add the above mixed rare earth solution into the oxalic acid solution, stir for 30min, and let it stand for 4h; Precipitate and filter to obtain solid yttrium-lutetium-cerium oxalate, and burn in a muffle furnace at 1200°C for 2 hours to obtain yttrium-lutetium-cerium oxide powder.

[0039] The yttrium lutetium cerium oxide powder prepared in the above examples has the advantages of uniform distribution of rare earth elements, etc., and can meet the requirements of scint...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a preparation method of yttrium lutetium cerium oxide for scintillation crystals, and belongs to the technical field of rare earth extraction and separation. The preparation method of the present invention comprises the following steps: Step 1: According to the stoichiometric ratio of the three rare earth elements of yttrium, lutetium and cerium, the stripping solutions of the three rare earth ions are evenly mixed, and the pH value of the solution is adjusted to 2 to 3 with ammonia water, and heated. Obtain a solution; Step 2: Prepare the oxalic acid solution according to the molar ratio of the total rare earth and the precipitant oxalic acid as 1:1.8-2.2, and heat the oxalic acid solution to obtain the b solution; Step 3: Slowly add the a solution under the condition of stirring into the solution b, stirred, left to age for 3-6 hours, and filtered to obtain the precipitate of yttrium-lutetium oxalate; step 4: the precipitate of yttrium-lutetium oxalate was burned in a muffle furnace at 800-1200°C for 2-4 hours to obtain the oxidized Yttrium lutetium cerium powder. The yttrium lutetium cerium oxide powder prepared by the invention has the advantages of uniform distribution of rare earth elements, precise and adjustable element content, and can provide raw materials for the preparation of scintillation crystals such as LYSO and LuYAP.

Description

technical field [0001] The invention belongs to the technical field of rare earth extraction and separation, and in particular relates to a preparation method of yttrium lutetium cerium oxide for scintillation crystals. Background technique [0002] Due to their unique electronic structure, rare earth elements have excellent physical and chemical properties such as light, electricity, and magnetism. They are widely used in high-tech fields such as electronic information, energy and environmental protection, national defense and military industry, high-tech materials, and biomedicine. mineral resources. For example, cerium-doped yttrium lutetium silicate (LYSO), yttrium lutetium aluminate (LuYAP) and other scintillation crystals have excellent properties such as high density, high light output and short decay time, and are widely used in the fields of high energy physics, nuclear physics, nuclear medicine and safety detection with broadly application foreground. For example...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01F17/241
CPCC01P2002/72C01P2004/03C01F17/241
Inventor 陈继邓岳锋李德谦常永青刘郁李海连
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com