Supported catalyst for efficiently catalyzing decomposition of N2O as well as preparation method and application of supported catalyst

• Main Authors: LI CUIQING, WANG XINCHENG, WANG HONG, HUANG SIQI, SONG YONGJI, QIU YANGJUN
• Format: Patent
• Language: Chinese; English
• Published: 07.09.2018
• Subjects: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSEGASES [GHG]; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a supported catalyst for efficiently catalyzing decomposition of N2O as well as a preparation method and application of the supported catalyst. The supported catalyst comprises5-15wt% of CuO, 5-15wt% of Y2O3, 0.5-10wt% of an additive, and the balance of a pseudo-boehmite roasted gamma-Al2O3 supporter, wherein the additive and CuO2 and Y2O3 which are used as the active components are loaded on the pseudo-boehmite roasted gamma-Al2O3 supporter. The preparation method comprises the following steps: feeding the pseudo-boehmite roasted gamma-Al2O3 supporter into a precursorsolution containing cupric nitrate and yttrium nitrate according to an incipient-wetness impregnation method; then drying, roasting, tabletting and screening to obtain the product. The supported catalyst can be used for catalyzing decomposition of N2O under the temperature of 400-500 DEG C; few active components are loaded, and the decomposing efficiency is high; in addition, the supported catalyst remains high catalyzing