The invention provides a copper oxide catalyst for preparing chlorine gas from chlorine hydride by catalytic oxidation, and a preparation method and application thereof. The catalyst is prepared from the following components in percentage by weight: 1-20% of CuO, 1-15% of K2O and 65-98% of support, wherein the support is rare-earth oxide modified activated alumina. The invention belongs to an environment-friendly low-cost catalyst; and the rare-earth oxide modified activated alumina is used as the support to enhance the activity and stability of the catalyst and prolong the service life of the catalyst. An isometric impregnation method is utilized to directly support copper and potassium chloride onto the rare-earth oxide modified activated alumina support, and roasting is carried out in an air atmosphere to obtain the supported copper oxide catalyst. The preparation method is simple and easy to implement, and has the advantages of high catalyst activity and high stability.

Copper oxide catalyst for preparing chlorine gas from chlorine hydride by catalytic oxidation, and preparation method and application thereof

The invention discloses a copper-based catalyst for preparing chlorine gas by catalyzing and oxidizing hydrogen chloride as well as a preparation method and application thereof. The copper-based catalyst is prepared by loading copper chloride, potassium chloride, samarium chloride or samarium chloride and lanthanum chloride on the surface of an activated aluminium oxide carrier by using an impregnation method. The copper-based catalyst comprises the following components in percentage by weight: 3-20 percent of CuCl2, 1-7 percent of KCl, 2-25 percent of SmCl3, 0-15 percent of LaCl3 and 50-90 percent of Al2O3. The catalyst is an environment-friendly, high-performance and low-cost copper-based catalyst and is free of poisonous components including Cr element or high-cost ruthenium compounds; through the addition of samarium chloride, the catalysis performance of the loaded copper-based catalyst is greatly improved. The preparation method of the catalyst is the impregnation method; the preparation method is simple and is liable to operate; the industrialization is liable to implement; the catalyst is high in activity and excellent in stability.

Copper-based catalyst for preparing chlorine gas by catalyzing and oxidizing hydrogen chloride as well as preparation method and application thereof

The present invention discloses a catalyst for chlorine gas preparation through catalytic oxidation of hydrogen chloride, a preparation method and applications thereof, wherein the catalyst comprises, by weight, 23-32% of Al, 5-14% of Si, 0.8-16% of Cu, 4-8% of La, and 0.8-16% of K. According to the present invention, silica-coated alumina is adopted as the carrier to prepare the catalyst, such that the high hydrogen chloride conversion rate is ensured while the corrosion of the impurity phosgene and the like in the hydrogen chloride on the catalyst during the reaction process can be prevented or reduced so as to avoid the catalyst bed layer clogging.

Catalyst for chlorine gas preparation through catalytic oxidation of hydrogen chloride, preparation method and applications thereof

The invention discloses a catalyst for preparation of chlorine gas with a by-product hydrogen chloride as a raw material and a preparation method and an application thereof. The catalyst includes the following components by the weight percentage: 5-35% of transition metal oxides, 1-10% of an alkali metal oxide, 2-30% of rare earth oxides, and the balance a carrier. Transition metals are Cu and V, and the weight ratio of oxide of Cu to oxide of V is 2:1-10:1; an alkali metal is potassium; rare earths are more than one of Ce, La or Pr; the by-product hydrogen chloride is a by-product hydrogen chloride in an MDI and TDI preparation process. The catalyst does not contain toxic components and is an environmental-protection type low-cost catalyst; the preparation method is simple and easy to implement, the ratio of active components is controllable, impurities in the by-product hydrogen chloride can be effectively decomposed, the influence on the reaction based catalyst is reduced, the catalytic activity is high, and the stability is good.

Catalyst for preparation of chlorine gas with by-product hydrogen chloride as raw material and preparation method and application thereof

The present invention relates to a catalyst for producing chlorine by oxidation of hydrogen chloride and a method for preparing the same. The catalyst comprises a support and active ingredients that comprise 1-20 wt % of copper, 0.01-5 wt % of boron, 0.1-10 wt % of alkali metal element(s), 0.1-15 wt % of one or more rare earth elements, and 0-10 wt % of one or more elements selected from magnesium, calcium, barium, manganese, iron, nickel, cobalt, zinc, ruthenium or titanium based on the total weight of the catalyst. The catalyst is prepared by a two-step impregnation method. Comparing with the available catalysts of the same type, the catalyst according to the present invention has greatly improved conversion and stability.

Catalyst for preparing chlorine by oxidation of hydrogen chloride and preparation thereof

The invention discloses a catalyst used for the catalytic oxidation of hydrogen chloride for preparing chlorine gas and a preparation method thereof. The catalyst comprises the following components in percentage by weight: 1 to 30 percent of CuCl2, 1 to 15 percent of KCl, 1 to 25 percent of rare earth chloride and 55 to 95 percent of carrier and is prepared by adopting an immersion method. The catalyst of the invention does not contain a toxic component Cr, belongs to an environmental-friendly low-cost catalyst and has the advantages of simple and practical preparation method, high catalyst activity, high stability and long service life.

Guanzhong Lu

Papers

Catalyst used for catalytic oxidation of hydrogen chloride for preparing chlorine gas and preparation method thereof

Copper oxide catalyst for preparing chlorine gas from chlorine hydride by catalytic oxidation, and preparation method and application thereof