摘要:
The purpose of/problem to be addressed by the present invention is to provide: an Fe(II)-substituted beta-type zeolite useful for the catalytic removal of a variety of gases; and a production method therefor. The SiO 2 /Al 2 O 3 ratio in this Fe(II)-substituted beta-type zeolite is equal to or more than 7 but less than 10. This Fe(II)-substituted beta-type zeolite is obtained by being subjected to ionic exchange with Fe(II) ions. It is preferable that the Fe(II) loading amount be in the range of 0.001-0.4mmol/g of the Fe(II)-substituted beta-type zeolite. It is preferable that the Fe(II)-substituted beta-type zeolite be produced using a method in which a beta-type zeolite having an SiO 2 /Al 2 O 3 ratio of equal to or more than 7 but less than 10 is dispersed in an Fe(II) water-soluble-compound aqueous solution, and then mixed and agitated to cause the beta-type zeolite to carry Fe(II) ions.
摘要:
The present invention provides a beta zeolite that is useful as a catalyst, adsorbent agent, or the like, and that is both microporous and mesoporous. The beta zeolite is characterized by (i) the SiO 2 /Al 2 O 3 ratio being 8-30, and the SiO 2 /ZnO ratio being 8-1000, (ii) the micropore surface area being 300-800 m 2 /g, (iii) the micropore volume being 0.1-0.3 cm 3 /g, and (iv) having mesopores having, in the state as synthesized, a diameter of 2-6 nm and a volume of 0.001-0.3 cm 3 /g. The beta zeolite is favorably produced by means of adding and reacting a zinc silicate beta zeolite as a seed crystal with a reaction mixture containing a silica source, an alumina source, an alkali source, and water.
摘要翻译:本发明提供了可用作催化剂,吸附剂等的β沸石,既是微孔的又是介孔的。 β沸石的特征在于(i)SiO 2 / Al 2 O 3比为8-30,SiO 2 / ZnO比为8-1000,(ii)微孔表面积为300-800m 2 / g ,(iii)微孔体积为0.1-0.3cm 3 / g,(iv)具有在合成状态下具有2-6nm直径和0.001-0.3cm 3 / g体积的介孔。 β沸石通过将硅酸锌β沸石作为晶种与含有二氧化硅源,氧化铝源,碱源和水的反应混合物加入和反应而有利地产生。
摘要:
Provided is a mordenite zeolite which can be produced without using an organic structure-directing agent, and has superior multivalent metal cation exchange capability. The mordenite zeolite according to the present invention containing silicon, a divalent metal M and aluminum in a skeletal structure, wherein the mordenite zeolite has the following atomic ratios in the state of Na-form. The mordenite zeolite preferably has a BET surface area of 250 m 2 /g or more and 500 m 2 /g or less and a micropore volume of 0.07 cc/g or more and 0.25 cc/g or less in the state of Na-form or H-form. Si/(M + Al) = 5 or more and 10 or less, M/(M + Al)= 0.1 or more and less than 1, and Na/(M + Al) = 1 or more and less than 2
摘要:
A skin gas measurement device includes a skin gas collecting unit that includes a skin gas collecting space having an opening that is to be attached to a skin surface, a porous material that is for adsorbing and concentrating a skin gas component that is emitted from the skin surface into the skin gas collecting space and that allows the adsorbed skin gas component to be desorbed at a relatively low temperature, and a heater for heating the porous material; and a skin gas measurement unit for measuring the skin gas component that is desorbed from the heated porous material.