摘要:
This invention relates to a new synthetic crystalline material comprising acidic surface silanol groups, designated MCM-69, a method for its preparation and use thereof in catalytic conversion of organic compounds.
摘要:
The permeability of subterranean oil-bearing formations is controlled by injection of an organic polysilicate ester. The ester may be derived from simple, monohydroxylic alcohols such as methanol, ethanol, propanol or butanol, from diols such as ethylene glycol, from polyols such as glycerol and alkylene oxide polymerization products and from other organic compounds containing function hydroxy groups, for example, partial ethers and esters of glycols and polyols. The polysilicates are injected into a formation through injection wells, suitably in an amount from 10 to 100% of the pore volume of the zone to be treated. In the formation, the polysilicate esters form gels which selectively plug the high permeability regions of the formation, to divert the flow of flooding liquid used in flooding operations to the less permeable regions of the formation.
摘要:
An enhanced recovery process in which liquid sulfur is burned in an oyxgen-containing gas underground to form SO.sub.2. The SO.sub.2 may itself act as a drive fluid for the recovery of oil or it may react with limestone in the formation to form CO.sub.2, an alternate drive fluid.
摘要翻译:一种增强的回收方法,其中液体硫在含有含氧气体的地下燃烧形成SO 2。 SO 2本身可以作为用于回收油的驱动流体,或者它可能与地层中的石灰石反应形成二氧化碳,另一驱动流体。
摘要:
The present invention relates to a composition and a method for preparing ZSM-48 exhibiting an X-ray pattern having values as set forth in Table 1 of the specification. The method of the present invention includes (a) preparing a reaction mixture; and (b) maintaining the mixture under crystallization conditions until crystals of the ZSM-48 are formed. The mixture includes a source of silica, a source of trivalent metal oxide, an alkali metal oxide, ethylenediamine and water. The mixture, in terms of mole ratios of oxides, has the following composition ranges:SiO.sub.2 /Me.sub.2 O.sub.3 : 100 to 1500,M.sub.2/n O/SiO.sub.2 : 0 to 0.2,RN/SiO.sub.2 : 2.0 to 5.0,OH.sup.- /SiO.sub.2 : 0 to 0.3, andH.sub.2 O/SiO.sub.2 : 10 to 100,wherein Me is a trivalent metal, M is an alkali metal and RN is ethylenediamine.
摘要翻译:本发明涉及一种制备ZSM-48的组合物和方法,该ZSM-48具有如本说明书的表1中所列的值的X射线图案。 本发明的方法包括(a)制备反应混合物; 和(b)将混合物保持在结晶条件下,直到形成ZSM-48的晶体。 该混合物包括二氧化硅源,三价金属氧化物源,碱金属氧化物,乙二胺和水。 该混合物以氧化物的摩尔比计具有以下组成范围:SiO 2 / Me 2 O 3:100至1500,M 2 / nO / SiO 2:0至0.2,RN / SiO 2:2.0至5.0 OH- / SiO 2:0至 0.3,H 2 O / SiO 2:10〜100,其中Me为三价金属,M为碱金属,RN为乙二胺。
摘要:
This invention provides a process for upgrading a variety of hydrocarbon oils including low-grade crudes and fractions thereof. In this process, a hydrocarbon oil having an ASTM 50% temperature not higher than 550.degree. F. is converted at low temperature and pressure to more volatile products by a dispersion of crystalline zeolite catalysts having a silica: alumina ratio of at least 12 and a C.I. within 1-12. Initially, 0.02-10 wt % of the catalyst is dispersed in the feed until the catalyst inventory in the reactor stage accumulates. Thereafter, catalyst is added and removed to maintain a total catalyst content not greater than about 35 wt % of the feed in the reactor.
摘要翻译:本发明提供了一种升级包括低级原油及其馏分在内的各种烃油的方法。 在该方法中,具有ASTM50%温度不高于550°F的烃油通过二氧化硅:氧化铝比至少为12的结晶沸石催化剂的分散体在低温和高压下转化成更易挥发的产物, CI 在1-12之内。 最初,将0.02-10重量%的催化剂分散在进料中,直到反应器阶段的催化剂存量累积。 此后,加入并除去催化剂以保持反应器中进料总催化剂含量不超过约35重量%。
摘要:
A lower alcohol and/or ether feed is selectively converted to a mixture of light olefins, including ethylene and propylene, by catalytic contact of the feed material with a catalyst comprising one or more zeolites characterized by a silica to alumina mole ratio of at least 12 and a constraint index in the approximate range of 1 to 12. The catalytic conversion is carried out in the presence of bulky heterocyclic organic nitrogen compounds to suppress the formation of mononuclear aromatics. The process of this invention is particularly useful in the production of C.sub.2 -C.sub.3 olefins from methanol or dimethyl ether.
摘要:
A process for settling sedimentary materials wherein aqueous suspensions thereof are treated with H.sub.2 S as a means for separating clays containing metals associated therewith.
摘要:
Selective reactions of hydrocarbons and/or oxygenated hydrocarbons are conducted in the presence of catalysts comprising one or more zeolites characterized by a silica to alumina mole ratio of at least 12 and a constraint index in the approximate range of 1 to 12, said catalysts are contacted with bulky heterocyclic organic nitrogen compounds. Said nitrogen compounds have an effective critical dimension of greater than 6.2 Angstroms and a pKa of between about 3 and 9. The process of this invention is particularly useful in the production of dialkylbenzene derivatives low in the ortho-isomer.
摘要:
Aluminosilicate zeolites are prepared containing an outer aluminum-free shell. The outer shell is essentially SiO.sub.2 that has crystallized on the zeolite surface in the ZSM-5 type configuration, leading to a more selective catalyst.
摘要:
The permeability of subterranean oil-bearing formations is controlled by injection of an organic polysilicate ester. The ester may be derived from simple, monohydroxylic alcohols such as methanol, ethanol, propanol or butanol, from diols such as ethylene glycol, from polyols such as glycerol and alkylene oxide polymerization products and from other organic compounds containing functional hydroxy groups, for example, partial ethers and esters of glycols and polyols. The polysilicates are injected into a formation through injection wells, suitably in an amount from 10 to 100% of the pore volume of the zone to be treated. In the formation, the polysilicate esters form gels which selectively decrease the permeability of the high permeability regions of the formation, to divert the flow of flooding liquid used in flooding operations to the less permeable regions of the formation.