公开(公告)号：US09101908B2

公开(公告)日：2015-08-11

申请号：US13686232

申请日：2012-11-27

Applicant: Korea Institute of Science and Technology

Inventor： Jong Soo Jurng ,  Sung Min Chin ,  Eun Seuk Park

IPC: B01J23/22 ,  B01J37/02 ,  B01D53/94 ,  B01J35/00 ,  B01J35/10

CPC classification number: B01J23/22 ,  B01D53/9409 ,  B01D53/9418 ,  B01D2255/20707 ,  B01D2255/20723 ,  B01D2255/9207 ,  B01J35/002 ,  B01J35/1019 ,  B01J35/1038 ,  B01J37/0201 ,  B01J37/0211 ,  B01J37/0213 ,  B01J37/0238

Abstract: Provided is a method for preparing a vanadia-titania catalyst, comprising: vaporizing a titanium precursor; conveying the vaporized titanium precursor to a reaction unit together with an oxygen supplying source; reacting the vaporized titanium precursor conveyed to the reaction unit with the oxygen supplying source to produce titania particles; condensing the titania particles, collecting and recovering them; mixing the recovered titania particles with a vanadium precursor solution; drying the mixture of the titania particles with the vanadium precursor solution; and calcining the dried mixture under oxygen atmosphere or air. Provided also is a vanadia-titania catalyst obtained by the method. The vanadia-titania catalyst has a large specific surface area, uniform and fine nano-scaled size, and high dispersibility, thereby providing excellent nitrogen oxide removal efficiency, particularly in a low temperature range of 200° C.-250° C.

Abstract translation: 提供了一种制备氧化钒 - 二氧化钛催化剂的方法，包括：蒸发钛前体; 将蒸发的钛前体与氧供应源一起输送到反应单元; 将输送到反应单元的蒸发的钛前体与供氧源反应以产生二氧化钛颗粒; 冷凝二氧化钛颗粒，收集和回收它们; 将回收的二氧化钛颗粒与钒前体溶液混合; 用钒前体溶液干燥二氧化钛颗粒的混合物; 并在氧气氛或空气下煅烧干燥的混合物。 还提供了通过该方法获得的氧化钒 - 二氧化钛催化剂。 氧化钒 - 二氧化钛催化剂具有大的比表面积，均匀和细小的纳米级尺寸和高分散性，从而提供优异的氮氧化物去除效率，特别是在200℃-250℃的低温范围内。