Modified carbon material and method for reducing carbonaceous material ignition temperature

Patent metadata

Field	Value
Publication number	US-11234456-B2
Application number	US-201917049027-A
Country	US
Kind code	B2
Filing date	Sep 25, 2019
Priority date	Aug 13, 2018
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

A modified carbon material, including a carbonaceous material and a water-insoluble modifier combined with the carbonaceous material, wherein the water-insoluble modifier is CuO, the carbonaceous material is one of or a mixture of biomass carbon or carbon black, a mass of the water-insoluble modifier is being 0.1-10 wt % of the carbonaceous material. The method for preparing the modified carbon material includes: (1) soaking the carbonaceous material in a copper sulfate solution for 5 to 36 hours, and (2) adding an alkali solution into a solution obtained in step (1) to provide a pH value ≥12, and after keeping the pH value for 0.5 to 2 hours, filtering and drying to obtain a solid. (3) using the carbonaceous material as a combustion heat source to reduce the ignition temperature, increase or reduce the peak thermal power temperature.

First claim

What is claimed is:

1. A method for preparing a modified carbon material comprising CuO wherein the method comprises the following steps:
(1) obtaining a first solution by soaking a carbonaceous material in a copper sulfate solution for 5 to 36 hours, wherein a ratio of the carbonaceous material to the copper sulfate solution is controlled to control the CuO in the modified carbon material to be 1% by weight of the carbonaceous material;
(2) adding an alkali solution into the first solution obtained in step (1) to provide a pH value ≥12, and after keeping the pH value for 0.5 to 2 hours, filtering and drying to obtain a solid, wherein the solid is the modified carbon material.

2. The method according to claim 1 , wherein the copper sulfate solution in step (1) has a concentration of from 0.5 to 3 wt %.

3. The method according to claim 1 , wherein the alkali solution in step (2) is a sodium hydroxide solution or a potassium hydroxide solution, with a concentration of from 1 to 50 wt %.

4. The method according to claim 1 , wherein a drying temperature in step (2) is in a range from 80 to 95° C.

5. The method according to claim 1 , wherein the carbonaceous material is carbon black.

Assignees

• China Tobacco Yunnan Ind Co Ltd

Inventors

• Lei Ping
• Tang Jianguo
• Chen Yongkuan
• Shang Shanzhai
• Zheng Xudong
• Li Zhiqiang
• Gong Weimin
• Han Jingmei
• Wang Chengya
• Wu Jun
• He Pei
• Xu Xiaoli
• Cao Dongye
• Liu Zhihua

Classifications

• A24D1/22

  Cigarettes with integrated combustible heat sources, e.g. with carbonaceous heat sources · CPC title

• C10L2200/0254

  Oxygen containing compounds · CPC title

• Y02E50/10

  Biofuels, e.g. bio-diesel · CPC title

• C10L9/10

  by using additives · CPC title

• C10L2200/0209

  Group I metals: Li, Na, K, Rb, Cs, Fr, Cu, Ag, Au · CPC title