Modified desulfurized fly ash for fixing carbon dioxide and preparation method thereof

• Main Authors: YANG HONG, FENG QIYAN, LIU YING, TAO HUAN, LIANG HAOQIAN, CHEN DI
• Format: Patent
• Language: Chinese; English
• Published: 18.12.2020
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention discloses modified desulfurized fly ash for fixing carbon dioxide and a preparation method of the modified desulfurized fly ash, the modified desulfurized fly ash comprises desulfurizedfly ash, a nitrogen-containing silane coupling agent, ethanol and deionized water, and the mass ratio of the desulfurized fly ash to the nitrogen-containing silane coupling agent to the ethanol to thedeionized water is 1:(0.3-2):(0.3-2):(0.5-3). According to the modified desulfurized fly ash provided by the invention, a traditional method for fixing carbon dioxide by simply utilizing a calcium-based material is changed, amino functional groups are introduced to the surface of the desulfurized fly ash through modification of a nitrogen-containing silane coupling agent, the chemical adsorptioneffect of the carbon dioxide is improved, and the capability of fixing the carbon dioxide by the desulfurized fly ash can be greatly improved. The preparation method of the modified desulfurized fly ash is simple and easy to im