摘要:
Calcium silicate treated with an acid can be used as a polymerization catalyst or as a deodorizing agent. The acid is sulfuric acid, phosphoric acid or nitric acid.
摘要:
High purity ammonium uranyl tricarbonate is produced from crude plant yellow cake by treatment of the yellow cake with a mineral acid, neutralization of the acidic solution with a conversion of the uranium therein to ammonium uranyl tricarbonate, precipitation of the ammonium uranyl tricarbonate with a non-solvent, followed by separation. Optionally, the ammonium uranyl tricarbonate can be calcined to produce high purity uranium oxides.
摘要:
This invention relates to azeotropic compositions of 1,2-dichloro-1-fluoroethane or of 1,2-dichloro-1,2-difluoroethane with certain alcohols, ethers, or ketones.
摘要:
This invention relates to azeotropic compositions of 1,2-dichloro-1-fluoroethane or of 1,2-dichloro-1,2-difluoroethane with certain alcohols, ethers, or ketones.
摘要:
Calcium silicate treated with an acid can be used as a polymerization catalyst or as a deodorizing agent. The acid is sulfuric acid, phosphoric acid or nitric acid.
摘要:
Hydrocarbon, suitable for use as propellant, is contacted with a solid effective to remove odor-forming impurity therefrom. Hydrocarbons include isobutene-containing stream also containing minor proportions of unsaturated hydrocarbon, e.g. ethylene, propylene, isobutylene, and 2-butenes. Solids include an acid montmorillonite clay, aluminum chloride, AlCl.sub.3 .multidot.HCl, AlCl.sub.3 .multidot.RCl, at least one metal of Groups I, II, and III of the periodic table, and supported H.sub.3 PO.sub.4.
摘要翻译:适合用作推进剂的碳氢化合物与有效地从其中除去产生气味的杂质的固体接触。 烃类包括含有少量不饱和烃的含异丁烯的物流,例如。 乙烯,丙烯,异丁烯和2-丁烯。 固体包括酸性蒙脱石粘土,氯化铝,AlCl 3 x HCl,AlCl 3 xRCl,元素周期表第I,II和III族中的至少一种金属和负载的H 3 PO 4。
摘要:
Double bond isomerization and disproportionation of olefins is obtained by contact with a catalyst in a single-stage composition containing a support, uranium, and at least one of tungsten, molybdenum, or rhenium.
摘要:
A pipe coating composition consisting essentially of a binder, mineral aggregates, a finely divided mineral filler and synthetic organic fibers exhibits improved cracking time as compared to a pipe coating composition containing glass fibers instead of the organic fibers.
摘要:
A process for disproportionation of olefins is disclosed employing a novel catalyst comprising a silica support treated with an oxide or oxide precursor of tungsten and a Group I oxide or compound convertible to the oxide in admixture with a double bond isomerization catalyst.
摘要:
The disproportionation/skeletal isomerization of olefins can be carried out with high conversions and selectivity in the presence of catalyst compositions containing Group IIA and at least one of Group VIB and rhenium components.