Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Integral honeycomb cordierite carrier and preparation method thereof
The invention discloses an integral honeycomb cordierite carrier and a preparation method thereof, the integral honeycomb cordierite carrier comprises honeycomb cordierite and an alumina coating, the cordierite content is 75-95 wt%, and the alumina coating content is 5-25 wt%; the aluminum oxide coating is flaky particles, the size of the flaky particles is 100-300 nm, the thickness of the flaky particles is 30-100 nm, and the flaky particles are stacked to form 10-200 nm pore channels. The preparation method of the integral honeycomb cordierite carrier comprises the following steps: (1) impregnating pretreated cordierite with an aluminum salt solution, and drying and roasting the impregnated cordierite to obtain aluminum-loaded cordierite; and (2) immersing the aluminum-loaded cordierite in the step (1) into an epoxypropane solution for sealed hydrothermal treatment, and drying and roasting the material after the hydrothermal treatment to obtain the integral honeycomb cordierite carrier. Aluminum oxide particles on the surface of the integral honeycomb cordierite carrier are of a sheet structure, the connectivity of channels of the carrier can be effectively improved, a coating is firmly combined with the surface of the carrier, and the integral honeycomb cordierite carrier is suitable for being used as a carrier of a catalyst for flue gas denitration, catalyst combustion and the like.
本发明公开了一种整体式蜂窝状堇青石载体及其制备方法，包括蜂窝状堇青石和氧化铝涂层，堇青石含量为75wt%‑95wt%，氧化铝涂层含量为5wt%‑25wt%；氧化铝涂层为片状粒子，片状粒子尺寸为100‑300nm，厚度为30‑100nm，片状粒子堆积形成10‑200nm孔道。本发明的整体式蜂窝状堇青石载体的制备方法，包括：（1）用铝盐溶液浸渍预处理后的堇青石，浸渍后的堇青石经干燥、焙烧制得载铝堇青石；（2）将步骤（1）载铝堇青石浸入环氧丙烷溶液中密封水热处理，水热处理后物料经干燥、焙烧，制得整体式蜂窝状堇青石载体。本发明的整体式蜂窝状堇青石载体表面氧化铝粒子为片状结构，能够有效提高载体孔道的贯通性，涂层与载体表面结合牢固，适用于作为烟气脱硝及催化剂燃烧等催化剂的载体。
Integral honeycomb cordierite carrier and preparation method thereof
The invention discloses an integral honeycomb cordierite carrier and a preparation method thereof, the integral honeycomb cordierite carrier comprises honeycomb cordierite and an alumina coating, the cordierite content is 75-95 wt%, and the alumina coating content is 5-25 wt%; the aluminum oxide coating is flaky particles, the size of the flaky particles is 100-300 nm, the thickness of the flaky particles is 30-100 nm, and the flaky particles are stacked to form 10-200 nm pore channels. The preparation method of the integral honeycomb cordierite carrier comprises the following steps: (1) impregnating pretreated cordierite with an aluminum salt solution, and drying and roasting the impregnated cordierite to obtain aluminum-loaded cordierite; and (2) immersing the aluminum-loaded cordierite in the step (1) into an epoxypropane solution for sealed hydrothermal treatment, and drying and roasting the material after the hydrothermal treatment to obtain the integral honeycomb cordierite carrier. Aluminum oxide particles on the surface of the integral honeycomb cordierite carrier are of a sheet structure, the connectivity of channels of the carrier can be effectively improved, a coating is firmly combined with the surface of the carrier, and the integral honeycomb cordierite carrier is suitable for being used as a carrier of a catalyst for flue gas denitration, catalyst combustion and the like.
本发明公开了一种整体式蜂窝状堇青石载体及其制备方法，包括蜂窝状堇青石和氧化铝涂层，堇青石含量为75wt%‑95wt%，氧化铝涂层含量为5wt%‑25wt%；氧化铝涂层为片状粒子，片状粒子尺寸为100‑300nm，厚度为30‑100nm，片状粒子堆积形成10‑200nm孔道。本发明的整体式蜂窝状堇青石载体的制备方法，包括：（1）用铝盐溶液浸渍预处理后的堇青石，浸渍后的堇青石经干燥、焙烧制得载铝堇青石；（2）将步骤（1）载铝堇青石浸入环氧丙烷溶液中密封水热处理，水热处理后物料经干燥、焙烧，制得整体式蜂窝状堇青石载体。本发明的整体式蜂窝状堇青石载体表面氧化铝粒子为片状结构，能够有效提高载体孔道的贯通性，涂层与载体表面结合牢固，适用于作为烟气脱硝及催化剂燃烧等催化剂的载体。
Integral honeycomb cordierite carrier and preparation method thereof
一种整体式蜂窝状堇青石载体及其制备方法
XUE YANG (Autor:in) / JI HONGHAI (Autor:in) / LING FENGXIANG (Autor:in) / WANG SHAOJUN (Autor:in) / ZHANG HUICHENG (Autor:in)
14.11.2023
Patent
Elektronische Ressource
Chinesisch
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