Abstract:
Described is a process to synthesize nano-size Zeolite A from an amorphous gel precursor which can be synthesized via reaction of NaAlO2, NaOH, and tetraethoxysilane (TEOS). Zeolite A with particle sizes of ˜150 nm was made by transformation of the amorphous precursor in (CH3)4NOH solution with Zeolite A seeding. The nano-sized Zeolite A can be part of processes for making non-phosphate detergent where the as-synthesized Zeolite A used as builders, for making thin films for separation and/or catalysis, for making secondary ordered patterns.
Abstract translation:描述了从无定形凝胶前体合成纳米尺寸沸石A的方法,该无定形凝胶前体可以通过NaAlO 2 H 2,NaOH和四乙氧基硅烷(TEOS)的反应合成。 通过将(CH 3/3)4NH 4 NOH溶液中的无定形前体与沸石A接种进行转化,制备粒径为〜150nm的沸石A. 纳米尺寸的沸石A可以是制备非磷酸盐洗涤剂的方法的一部分,其中合成的沸石A用作助洗剂,用于制备用于分离和/或催化的薄膜,用于制备二次有序图案。
Abstract:
A gas reactor includes a dielectric casing made of a dielectric material and forming a first conduit for directing first gas in one direction, a first electrode positioned inside the dielectric casing along a general center thereof and extending in the direction, at least one catalyst layer formed on a surface of the first electrode, and a second electrode surrounding an outer wall of the dielectric casing. The gas reactor further includes a power-supply unit applying AC power between the first electrode and the second electrode to generate glow discharge inside the dielectric casing.
Abstract:
A process of synthesizing synthetic manganese oxide hydrates having various structures including hollandite and todorokite structure by hydrothermal synthesis. The products have a high degree of crystallinity, and thermal stability.
Abstract:
The dehydrogenation of n-parrofins to n-olefins is catalyzed by novel synthetic manganese oxide octahedral molecular sieves such as OMS-1 and OMS-2.
Abstract:
A new class of manganese oxide octahedral molecular sieves possess a (4.times.4) tunnel structure. The molecular sieves possess the general compositionA.sub.a M.sub.b Mn.sub.16-b O.sub.32 n.multidot.H.sub.2 Owherein A is +1, +2, +3 or +4 tunnel cation or combination thereof, 0.ltoreq.a.ltoreq.8, M is +1, +2, +3 or +4 framework-substituting metal cation or combination thereof, 0.ltoreq.b.ltoreq.16 and n.gtoreq.0.A method of producing the molecular sieves includes the steps of dissolving a manganese salt in an organic solvent, e.g., ethanol, adding a permanganate salt to the resulting solution to provide a solid intermediate which is recovered and heated to a temperature which results in producing an octahedral molecular sieve having a (4.times.4) tunnel structure.The molecular sieves are useful in such applications as oxidation catalysis, hydrocarbon conversion, adsorption and electrochemical sensors.
Abstract:
Disclosed is a method for cracking a hydrocarbon material. The method includes introducing a stream including a hydrocarbon fluid and a carrier fluid into a reaction zone. A microwave discharge plasma is continuously maintained within the reaction zone, and in the presence of the hydrocarbon fluid and the carrier fluid. Reaction products of the microwave discharge are collected downstream of the reaction zone.