摘要:
A process of forming an array of powder samples arranged in predefined locations where all samples have a flat surface in a common plane has been developed. A main support having at least N perforations from a first surface of the main support through a second surface of the main support in predefined locations. The main support is equipped with a flat support temporarily attached to its first surface. All samples are loaded simultaneously. A flat surface of each sample, where the flat surfaces are a common plane, is formed by forcing the samples within the perforations against the flat support. The samples are retained in position within the perforations against the flat support using at least one cover. The flat surfaces of the samples are in predefined locations and are all in a common plane.
摘要:
Applicants have developed a novel catalyst composition comprising a crystalline metal oxide having the empirical formula: AvBt+wNixD(Gu−)yOz, where A is an alkali metal (e.g. Na), B is a basic metal (e.g. Ca), D is a framework component (e.g. P), and G is an anionic species (e.g. OH−). Nickel may be present in the framework of the crystalline metal oxide, dispersed thereon, or both. Preferably, the metal oxide component has an apatite or hydroxyapatite crystal structure. These crystalline metal oxide components have been found to have improved performance in partial oxidation and light hydrocarbon (e.g. methane) reforming to produce synthesis gas. A new process for synthesizing these metal oxides is also disclosed.
摘要:
A zeolite may be synthesized having the framework topology of tschörtnerite (TSC) and an empirical formula of mA2/nO:Al2O3:ySiO2 where A is a cation such as lithium. It is anticipated that the synthetic TSC is usable in processes for separating mixtures of molecular species. The lithium analog should be useful for air separation.
摘要:
This invention relates to novel crystalline metallo manganese oxides that has the hollandite structure. The composition is represented by the formulaA.sub.y Mn.sub.8-x M.sub.x O.sub.16where A is a templating agent such as potassium, ammonium, and y varies from about 0.5 to about 2.0, M is a metal such as chromium, vanadium, gallium, antimony and x varies from about 0.01 to about 4.0. These oxides have a three-dimensional structure with manganese and the M metals forming the framework. Finally, these novel oxides are capable of catalyzing hydrocarbon conversion processes such as oxidation and oxidative dehydrogenation.
摘要:
A new family of crystalline microporous metallophosphates designated AlPO-59 has been synthesized. These metallophosphates are represented by the empirical formula R+rMm2+EPxSiyOz where R is an organoammonium cation such as the ETMA+, M is a framework metal alkaline earth or transition metal of valence 2+, and E is a trivalent framework element such as aluminum or gallium. The AlPO-59 compositions are characterized by a new unique ABC-6 net structure and compositions and have catalytic properties for carrying out various hydrocarbon conversion processes, and separation properties for separating at least one component.
摘要:
A process and catalyst for preparing organic hydroperoxides by oxidizing hydrocarbon compounds in the presence of an oxygen-containing gas and a catalyst containing a transition metal on a solid support.
摘要:
A new family of crystalline molecular sieves have been synthesized. These compositions have a microporous structure of ZrO.sub.3 octahedral units, and at least one of SiO.sub.2 tetrahedral units and GeO.sub.2 tetrahedral units. Optionally, the molecular sieves contain M metals such as titanium, niobium, or tin. These novel molecular sieves are prepared hydrothermally from a reaction mixture composed of reactive sources of the components. Additionally, these molecular sieves are useful for the selective adsorption of ammonium ions.
摘要:
Titanostannosilicalites molecular sieves as new compositions of matter have been found to be very selective, active catalysts in the epoxidation of olefins by peroxides. Dilute hydrogen peroxide suffices to afford high yields of the epoxide with good selectivity. The sieves described within have a unit empirical formula, on an anhydrous basis of (Ti.sub.x Sn.sub.y Si.sub.z)O.sub.2, where 0.0005
摘要:
A new family of crystalline manganese phosphate compositions has been prepared. These compositions have an extended network which network can be a one-, two-, or three-dimensional network. The composition has an empirical formula of: (A.sup.a+).sub.v (Mn.sup.b+)(M.sup.c+).sub.x P.sub.y O.sub.z where A is a templating agent such as an alkali metal, M is a metal such as Al, Fe.sup.3+ and "b" is the average manganese oxidation state and varies from greater than 3.0 to about 4.0. These compositions can be used as adsorbents and as catalysts in the oxidation of hydrocarbons.