会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Low pressure drop, high surface area ammonia oxidation catalyst
    • 低压降,高表面积氨氧化催化剂
    • US5278124A
    • 1994-01-11
    • US917385
    • 1992-07-23
    • William A. HochellaSteven A. Heffernen
    • William A. HochellaSteven A. Heffernen
    • B01J23/40B01J35/06C01B21/26B01J23/66B01J23/72B01J23/89
    • C01B21/265B01J23/40B01J35/06
    • This invention is a catalytic element for use in the catalytic oxidation of ammonia. The element comprises a foraminous structure fabricated from a material consisting essentially of a metal selected from the group consisting of platinum, rhodium, palladium and alloys of mixtures thereof characterized by (a) a novel configuration whereby the initial product of the formula: curve to the flat ratio (C/F) multiplied by mesh count in inches (N) and wire diameter (d.sub.W), for said element is at least about 0.08 and (b) where, for a given hydrogen throughput, the conversion efficiency is a function of the curve to flat ratio (C/F), wire diameter (d.sub.W) and mesh count (N) combination and conversion efficiency is improved by increasing the mesh count (N) for a given wire diameter, increasing the wire diameter (d.sub.W) for a given mesh count, and increasing the curve to flat ratio (C/F) to a ratio of above 1.0. Preferably the initial product of the formula is greater than 0.2, more preferably 0.9 and the curve to flat ratio (C/F) is above about .pi./2. The preferred initial product of the formula is in the range of from 0.08 to about 10 and more preferred from about 0.9 to about 10. The preferred element is woven gauze, knitted fabric, fibers and combinations thereof. The element can be in a series of said elements as a plurality of screens.
    • 本发明是用于氨催化氧化的催化元素。 该元件包括由基本上由选自铂,铑,钯和其混合物的合金组成的组中的金属组成的材料制成的多孔结构,其特征在于(a)新颖的构型,其中下式的初始产物:曲线与 对于所述元件,扁平比率(C / F)乘以网格计数(N)和线径(dW))为至少约0.08,并且(b)对于给定的氢通量,转换效率是 通过增加给定丝直径的网格数(N),提高曲线平坦比(C / F),线径(dW)和网格数(N)组合和转换效率,增加线径(dW) 给定的网格数,并将曲线平坦比(C / F)增加到1.0以上的比例。 优选地,式的初始产物大于0.2,更优选为0.9,曲线与平坦比(C / F)高于约(pi)/ 2。 优选的下式的初始产物为0.08至约10,更优选为约0.9至约10.优选的元素是织造纱布,针织物,纤维及其组合。 该元件可以是一系列所述元件作为多个屏幕。