摘要:
A catalyst for selective catalytic reduction of nitrogen oxides by use of ammonia as a reducing agent is prepared by mixing a silicic acid material with a lime material, heating the mixture under pressure to form a slurry of calcium silicate crystals, forming the slurry into a carrier, and then allowing the carrier to carry a catalytically active ingredient.
摘要:
The disclosure describes a method of incinerating combustible wastes comprising the step of incinerating said combustible wastes in the presence of a calcium compound and particles selected from the group consisting of iron oxide particles, ferric oxide hydroxide particles and mixed particles thereof.
摘要:
A solid strong acid catalyst useful for hydrocarbon reactions, especially for the skeletal isomerization of paraffinic hydrocarbons is provided by supporting sulfate (SO.sub.4) and at least one member selected from Group VIII metals on a support consisting of hydroxides and oxides of Group IV metals and Group III metals and mixtures thereof and then calcining and stabilizing the catalyst.
摘要:
The disclosure describes plastic formed products comprising:one selected from the group consisting of a thermoplastic resin and a thermosetting resin; and0.1 to 10 wt % of at least one selected from the group consisting of ferric oxide hydroxide particles, hematite particles, magnetite particles and maghemite particles;wherein (1) the average major axial diameter or the plate diameter of said ferric oxide hydroxide particles is 0.02 or 2.0 .mu.m and the average aspect ratio or the plate ratio thereof is 2 to 20, (2) the average particle size of said hematite particles, magnetite particles and maghemite particles is 0.01 to 1.0, the BET specific surface area thereof is 1 to 120 m.sup.2 /g and the water content on the surfaces thereof is not less than 0.02 wt %/m.sup.2 /g.
摘要:
A process for methanol which comprises cracking 100 moles of methanol in admixture with 1 to 99 moles of water, thereby obtaining a gas containing hydrogen and carbon monoxide, is described. The process is preferably carried out using a catalyst which consists of a carrier comprising copper and chromium oxides with or without manganese oxide and/or barium oxide and a catalytic component of nickel oxide or a mixture of nickel oxide and a basic oxide.
摘要:
The disclosure describes plastic formed products comprising:one selected from the group consisting of a thermoplastic resin and a thermosetting resin; and0.1 to 10 wt % of at least one selected from the group consisting of ferric oxide hydroxide particles, hematite particles, magnetite particles and maghemite particles;wherein (1) the average major axial diameter or the plate diameter of said ferric oxide hydroxide particles is 0.02 or 2.0 .mu.m and the average aspect ratio or the plate ratio thereof is 2 to 20, (2) the average particle size of said hematite particles, magnetite particles and maghemite particles is 0.01 to 1.0, the BET specific surface area thereof is 1 to 120 m.sup.2 /g and the water content on the surfaces thereof is not less than 0.02 wt %/m.sup.2 /g.
摘要:
A solid strong acid catalyst useful for hydrocarbon reactions, especially for the skeletal isomerization of paraffinic hydrocarbons is provided by supporting sulfate (SO.sub.4) and at least one member selected from Group VIII metals on a support consisting of hydroxides and oxides of Group IV metals and Group III metals and mixtures thereof and then calcining and stabilizing the catalyst.
摘要:
A method for recovering a denitrating catalyst for ammonia catalytic reduction which is characterized by treating the denitrating catalyst for ammonia catalytic reduction, in which a performance has deteriorated, with at least one selected from the group consisting of SO.sub.4.sup.2- compounds, sulfur compounds and sulfonic acid compounds in order to replenish the catalyst with a sulfur content.
摘要:
A catalyst for the selective catalytic reduction of nitrogen oxides by the use of ammonia as a reducing agent composed of a catalytically active constituent on a carrier having a honeycomb or parallel plate structure, the carrier being prepared from a slurry of crystallized calcium silicate prepared by mixing silicic acid and lime and heating the mixture under pressure, the calcium silicate having the structure of xonotrite and the formula 6 CaO.6 SiO.sub.2. H.sub.2 O.