Abstract: An information transaction device is connected to an information holding device including a storage unit storing personal information and includes a sharing approval reception unit configured to receive approval of sharing of the personal information by an information sharing destination device from a user associated with the personal information, a provision approval reception unit configured to receive approval of provision which is transmission of the personal information to an information provision destination device, from the user associated with the personal information, a sharing instruction unit configured to, in a case where the sharing approval reception unit receives the approval of the sharing, instruct the information holding device to perform the sharing, and a provision instruction unit configured to, in a case where the provision approval reception unit receives the approval of the provision, instruct the information holding device to perform the provision.

Abstract: An information transaction device stores catalog information including detailed information related to one or more datasets including personal information providable to an information provision destination device from an information provision source device. The information transaction device receives a provision request for the dataset from the information provision destination device. The information transaction device outputs a transmission request for the dataset indicated by the provision request to the information provision source device.

Abstract: In a method for the manufacture of a silver catalyst having silver deposited on a porous inorganic carrier in conjunction with at least one reaction accelerator selected from the group consisting of alkali metals and thallium to be used for the production of ethylene oxide, the improvement comprising the steps of depositing silver on the porous inorganic carrier in conjunction with at least one reaction accelerator selected from the group consisting of alkali metals and thallium thereby preparing an activated silver catalyst and subsequently subjecting said silver catalyst to a high-temperature treatment at a temperature in the range of 550.degree. to 950.degree. C. in an inert gaseous atmosphere having an oxygen concentration of not more than 3 volume percent in the final step.

Abstract: A process for the production of ethylene oxide by the vapor-phase catalytic oxidation of ethylene with molecular oxygen, which process comprises passing a mixed gas containing ethylene and molecular oxygen through a catalyst bed filled with a silver catalyst and subsequently passing the resultant reaction product gas through a cooling zone filled with a particulate material containing a substance capable of inhibiting the isomerization of ethylene oxide to acetaldehyde carrying at least one metal selected from the group consisting of sodium, potassium, rubidium, cesium, calcium, strontium, barium and thallium or a compound of said metal to be carried on an inert refractory particulate material.

Abstract: A silver catalyst for the production of ethylene oxide, comprising a granular .alpha.-alumina carrier having a sodium content of not more than 0.07% by weight and a specific surface area within the range of from 0.5 to 5 m.sup.2 /g, a finely divided metallic silver deposited on said carrier in an amount within the range of from 5 to 25% by weight based on the total catalyst, and at least one member selected from the group consisting of alkali metals of Atomic Numbers 19 to 55 and alkali metal compounds said at least one member being in an amount within the range of from 0.001 to 0.05 gram equivalent weight per kilogram of the complete catalyst.

Abstract: An improved process for preparing a silver-supported catalyst for use in the production of ethylene oxide by catalytic vapor phase oxidation of ethylene with molecular oxygen, which comprises impregnating a porous inorganic carrier with a solution of a silver compound containing a reducing compound, subjecting the impregnated product to a reducing treatment at 50.degree. to 200.degree. C. to disperse and deposit metallic silver on the external surface of the carrier and the internal surfaces of its pores, washing the silver-supported carrier with water, a lower alcohol or both, drying the washed product at a temperature of 50.degree. to 150.degree. C., impregnating the dried product with a solution containing a promoter, and evaporating the liquid ingredients.

Abstract: A process for preparing ethylene oxide by the catalytic vapor phase oxidation of ethylene with molecular oxygen in the presence of a catalytic composition whose constituent metallic elements and atomic ratio are represented by the general formulaAg.sub.a Ba.sub.b X.sub.c Tl.sub.d K.sub.e Cs.sub.f O.sub.gwherein X represents at least one metallic element of the group consisting of tin and antimony, a, b, d, e, f and g are number of atoms of silver, barium, thallium, potassium, cesium and oxygen, respectively, and c is the sum of the number of atoms of at least one metallic element of the group consisting of tin and antimony; and when a is 100, b is a number from 0 to 100, c is a number from 0.001 to 0.15, d is a number from 0 to 0.1, e is a number from 0 to 0.1, f is a number from 0 to 0.1, with the proviso that the relationship 0<d + e + f.ltoreq.0.3 is satisfied, and g is a number determined by the valence requirements of the other elements present.