摘要:
Shaped articles having improved mechanical properties, e.g., stronger catalysts and catalyst supports, are produced by shaping a mass of particulate material, e.g., ceramic powder, into the form of the desired final article, the particulate material including a microbially produced poly-saccharide compound, and then consolidating the shaped article by heat treating same, e.g., to sintering or calcination temperatures.
摘要:
Monolithic catalyst substrates are more adherently coated with at least one oxide layer, by including in the coating composition a gum or biogum, preferably xanthan gum.
摘要:
Durable, aging-resistant alumina-based catalyst carriers having improved mechanical strength are facilely prepared by (i) impregnating an alumina-based catalyst carrier with an aqueous solution of a quaternary ammonium silicate, (ii) drying said impregnated carrier, and (iii) calcining said dried carrier.
摘要:
Multilobar shaped catalyst particulates, e.g., tri- or quadrilobar particulates, well adapted for the catalytic conversion of gases containing compounds of sulfur, e.g. SO.sub.2, H.sub.2 S, COS and/or CS.sub.2, by the Claus reaction and/or by hydrolysis, are comprised of a catalytically effective amount of values catalytically active in the Claus reaction and/or reactions entailing hydrolysis of organosulfur compounds.
摘要翻译:多重形状的催化剂颗粒,例如三 - 或四 - 四氟颗粒,非常适用于含硫化合物的气体的催化转化, SO 2,H 2 S,COS和/或CS 2通过克劳斯反应和/或通过水解由催化有效量的克劳斯反应中催化活性的值和/或有机硫化合物的水解反应组成。
摘要:
The desulfurization of industrial gases by the catalytic conversion of contaminating sulfur values therein, comprising, e.g., either Claus process or hydrolysis of organosulfur compounds, is carried out in the presence of an effective amount of a cerium oxide-based catalyst.