Preparing method of composite and modified expanded graphite

A technology of expanded graphite and composite modification, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of long treatment time and poor adsorption effect of expanded graphite, and achieve fast adsorption rate , Balanced removal rate, simple operation effect

Inactive Publication Date: 2017-01-18
SHAANXI YIPINDA PETROCHEM CO LTD
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on expanded graphite has defects such as long processing time and poor adsorption effect.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with specific embodiments.

[0014] A preparation method of composite modified expanded graphite, comprising the following steps:

[0015] (1) Weigh 1.0000 g of potassium permanganate and grind it to a pulverized state, mix it with 10.0000 g of natural flake graphite, add 20.0000 g of nitric acid and phosphoric acid mixture, and heat at 50°C until no yellow smoke is generated. obtain expandable graphite;

[0016] (2) Weigh 2.9156 g of cetyltrimethylammonium bromide, dissolve it in deionized water, mix it with 2.0000 g of potassium bromide, heat and stir, and dilute to 100 mL to obtain cetyltrimethylammonium bromide Methylammonium bromide-potassium bromide mixed modifier;

[0017] (3) Take 10 g of expandable graphite prepared in step (1) and add it to 2 mL of 50% phosphoric acid solution, stir and activate it in a water bath at 30 °C for 30 min, add 4 mL of hexadecyltridecyl graphite prepared in ste...

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 belongs to the preparing field of adsorption material and particularly relates a preparing method of a composite and modified expanded graphite. The method comprises the following steps of 1, mixing potassium permanganate which is grinded into comminuted status evenly with natural flake graphite, adding mixed solution of nitric acid and phosphoric acid, and heating at 50 DEG C until yellow smog isn't generated any more to obtain expanded graphite; 2, preparing hexadecyltrimethylammonium bromide - potassium bromid mixed modifier; 3, using the modifier obtained in the step 2 to conduct modification for expandable graphite obtained in the step 1to obtain the composite and modified expanded graphite. The preparing method of the composite and modified expanded graphite is simple to operate, has relatively big hole diameter, quick adsorption rate for acid brilliant blue dye, high balance removal rate, meanwhile, unit adsorbing capacity is high, and adsorption reaction for the brilliant blue dye conforms to secondary dynamic absorption model.

Description

technical field [0001] The invention belongs to the field of preparation of adsorption materials, and in particular relates to a preparation method of composite modified expanded graphite. Background technique [0002] The annual discharge of dye wastewater in the world accounts for about 20% of the total industrial wastewater, and direct discharge will pose a serious threat to the ecological environment and human health. This kind of dye wastewater is difficult to treat and has a great impact on the environment. It is one of the typical biodegradable and difficult-to-treat organic industrial wastewater. Therefore, its effective treatment and reuse is the key to the clean development of the industry. Common treatment methods for dye wastewater include chemical methods, biological methods, and physical adsorption methods, among which adsorption treatment has attracted much attention because of its simplicity and convenience. The development and utilization of adsorbents are ...

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 Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28
CPCB01J20/20B01J20/04C02F1/281C02F2101/308
Inventor 李长英
Owner SHAANXI YIPINDA PETROCHEM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap