为实现传统催化剂填涂方法在微反应器中的应用,提出一种波纹状的催化剂金属载体结构,并利用多齿滚压成形工艺来实现该载体薄片的快速加工,研究了滚齿和压紧力大小对薄片成形的影响.结果表明:压紧力与滚轮齿距有关,齿距越大,压紧力越小;使用齿距相同的滚轮组进行加工时,不锈钢薄片形成规则的波纹形状,且滚压层表面形成茸状粗糙的结构特征,便于催化剂的附着;利用溶胶涂镀方法可将催化剂紧密地负载在波纹薄片的表面.
In order to effectively apply the conventional catalyst-coating methods to microreactors, a new kind of corrugated sheet as catalyst support was proposed. Then, a machining method named multi-teeth rolling formation was developed to realize the rapid and continuous production of the sheet, and the influences of bobbing and pressing force on the sheet formation were finally studied. The results indicate that ( 1 ) there is a negative relationship between the teeth space and the pressing force; (2) when the sheet is fabricated by a group of identical rollers, there forms regular corrugation and pubescence-like rough rolling surface, which facilitates the adhesion of the catalyst on the sheet ; and (3) the catalyst can be tightly coated on the sheet surface by means of slurry-coating method.