摘要:
The invention provides a method and system for the purification of exhaust gas from an internal combustion engine, comprising a filter and a SCR catalyst. The filter is periodically regenerated increasing the temperature of the exhaust gas up to 850° C. and the water vapor content up to 100% by volume. The SCR catalyst comprises a hydrothermally microporous stable zeolite and/or zeotype having the AEI type framework and being promoted with copper.
摘要:
A process for the direct synthesis of Cu-SAPO-34 comprising at least the steps: preparation of a mixture of water, at least one silicon source, at least one Al source, at least one P source, at least one Cu source, at least one 0SDA1 (any polyamine), and at least one OSDA2 source (where OSDA2 is any organic molecule capable of directing the synthesis of SAPO 34); and where the final synthesis mixture has the molar composition: a Si:0.5 Al:c Cu:d OSDA1:e OSDA2:f H2O wherein a is in the range from 0.01 to 0.3; b is in the range from 0.2 to 0.49; c is in the range from 0.001 to 0.6; d is in the range from 0.001 to 0.6; e is in the range from 0.001 to 2; f is in the range 1 to 200; hydrothermal treatment of the mixture at 80−200° C. until formation of the crystalline material, and recovery of the crystalline material.
摘要:
The present invention relates to a microporous crystalline material characterized in that it has the following chemical composition in the calcined from: xX2O3:nYO2:mGeO2 in which (n+m) is at least 5, X is one or more trivalent elements, Y corresponds to one or more tetravalent elements other than Ge, “x” may have any value, including zero, and the ratio Y/Ge is greater than 0.1, and it has a characteristic X-ray diffraction pattern. Its also relates to a method for preparing it and to its use in the conversion of organic-compounds supplies.
摘要:
A crystalline microporous material of zeolitic nature (ITQ-41) having in its calcined form a chemical composition represented by the empirical formula: x(M1/nXO2):yYO2:SiO2 wherein, Y is a chemical element other than Silicon with oxidation status +4; X is a chemical element with oxidation status +3; M is H+ or an inorganic cation with charge n+; n can take any value between 1 to 3; x can take any value comprised between from about 0 to about 0.2; preferably lower than 0.0666, and more preferably lower than 0.05; y can take any value comprised between 0 and 0.2, and wherein, said material is characterized by the presence of four reflections in its powder X-Ray diffraction pattern at 6.9°; 7.4°; 8.3°, and 9.6°2θ angles.
摘要翻译:沸石性质的结晶微孔材料(ITQ-41),其煅烧形式为经验式表示的化学组成:<?in-line-formula description =“In-line formula”end =“lead”?> x( M 1 / n XO 2 2):y Y 2 2:SiO 2 <β在线公式描述= “In-line Formulas”end =“tail”?>其中,Y是氧化状态+4以外的硅以外的化学元素; X是氧化态为+3的化学元素; M是H + H +或具有电荷n +的无机阳离子。 n可以取1到3之间的任何值; x可以取约0至约0.2之间的任何值; 优选低于0.0666,更优选低于0.05; y可以取0至0.2之间的任何值,并且其中所述材料的特征在于在其粉末X射线衍射图中在6.9°存在四次反射; 7.4°; 8.3°和9.6°2θ角。
摘要:
Disclosed are processes for isomerizing saccharides. Also disclosed are processes for converting saccharides to furan derivatives. Also disclosed are processes for converting starch to furan derivatives.
摘要:
Disclosed are processes for isomerizing saccharides. Also disclosed are processes for converting saccharides to furan derivatives. Also disclosed are processes for converting starch to furan derivatives.
摘要:
Process for the direct synthesis of Cu-SAPO-34 comprising at least the following steps: preparation of a mixture containing water, at least one silicon source, at least one Al source, at least one P source, at least one Cu source, at least one OSDA1 (where OSDA1 is any polyamine), and at least one OSDA2 (where OSDA2 is any organic molecule capable of directing the synthesis of the SAPO-34); and where the final synthesis mixture has the next molar composition: a Si:0.5 Al:b P:c Cu:d OSDA1:e OSDA2:f H20 wherein a is in the range from 0.01 to 0.3; wherein b is in the range from 0.2 to 0.49; wherein c is in the range from 0.001 to 0.6; wherein d is in the range from 0.001 to 0.6; wherein e is in the range from 0.001 to 2; wherein f is in the range from 1 to 200; hydrothermal treatment of the mixture at 80-200° C. until formation of the crystalline material, and recovery of the crystal-line material.
摘要:
Described herein are zeolite microporous crystalline materials comprising, in the heated state and in the absence of defects in its crystalline framework manifested by the presence of silanols, the empirical formula: x(M1/nXO2):yYO2:SiO2, wherein M is selected from H+, an inorganic cation of charge +n, and mixtures thereof, X is at least one chemical element having an oxidation state of +3, Y is at least one second chemical element other than Si having an oxidation state +4, x has a value between 0 and about 0.3, y has a value between 0 and about 0.1, and wherein the synthesized material has an X-ray diffraction pattern having at least values of angle 2θ (degrees) and relative intensities (I/I0) described. Process of making the microporous crystalline materials are also disclosed.
摘要:
The present invention relates to a microporous crystalline material characterized in that it has the following chemical composition in the calcined from: xX2O3:nYO2:mGeO2 in which (n+m) is at least 5, X is one or more trivalent elements, Y corresponds to one or more tetravalent elements other than Ge, “x” may have any value, including zero, and the ratio Y/Ge is greater than 0.1, and it has a characteristic X-ray diffraction pattern. Its also relates to a method for preparing it and to its use in the conversion of organic-compounds supplies.
摘要:
The invention relates to a microporous crystalline material which is characterised in that it has the following chemical composition in the calcined state: X2O3:n YO2:m GeO2, wherein (n+m) is equal to at least 5, X is a trivalent element, Y corresponds to one or more tetravalent elements other than Ge and the Y/Ge ratio is greater than 1. Moreover, in the synthesised form without calcination, said material has an X-ray diffraction pattern in which the main lines thereof are as follows: (1), in which (mf) represents relative intensity of between 80 and 100, “d” represents relative intensity of between 20 and 40 and “md” represents relative intensity of between 0 and 20, which is calculated as a percentage with respect to the most intense peak. The invention also relates to the method of preparing said material and the use thereof in the conversion of food products comprising organic compounds.
摘要翻译:本发明涉及一种微孔结晶材料,其特征在于其在煅烧状态下具有以下化学组成:X 2 O 3 :n YO 2:m GeO 2,其中(n + m)等于至少5,X是三价元素 ,Y对应于除Ge以外的一种以上的四价元素,Y / Ge比大于1.此外,在不进行煅烧的合成形式中,所述材料具有X射线衍射图,其主线如下 :(1)其中(mf)表示80〜100的相对强度,“d”表示20〜40的相对强度,“md”表示0〜20的相对强度,以 尊重最强烈的高峰。 本发明还涉及制备所述材料的方法及其在包含有机化合物的食品的转化中的用途。