起始原料的晶胞常数对超稳Y沸石性能的影响

以白土原位晶化得到的白土 NaY 为原料制备了三个系列的超稳沸石催化剂,测定了结晶度和晶胞常数,并以异丙基苯裂化为模型反应,评价了老化催化剂的裂化活性,以环己烯转化为模型反应,评价了老化催化剂的异构化、氢转移和积炭活性。结果表明,在水热处理条件下,超稳沸石的晶胞收缩程度随起始原料的晶胞常数增加而增大。这说明起始原料的晶胞常数影响水热处理条件下沸石的脱铝程度,因而老化催化剂的各种比催化活性能与起始原料的晶胞常数关联。讨论了水热条件下沸石结晶度损失的机理。     

最新专利

β－沸石作烷基化催化剂EP719750儿hevronUSAInc，1996．7．3Int．CI．B0lJ29／70C07C6／12今沸石可用作芳烃的烷基化催化剂。C。～C烯烃衍生物为烷基化试剂。反应可在液相中进行。催化剂具有高选择性，并且寿命长。芳烃烷基化的工艺包括：（a）原料为甲苯、二甲苯等，烷基化试     

纳米IIZSM-5沸石金属离子复合改性催化剂的制备及应用

公开号 CN 1546236A 公开日2004．11．17申请人大连理工大学本发明提供了一种用乙苯与乙烯为原料，经烷基化制对二乙苯的纳米HZSM-5沸石金属离子复合改性催化剂及其制备方法。该催化剂以纳米HZSM-5分子筛和载体Al203为母体，     

添加锰改性L沸石对烃类裂化催化剂性能的影响

制备一系列不同Mn含量的超稳L沸石（Mn—USL沸石），将Mn—USL沸石替代质量分数为5％的REUSY沸石作为催化剂的活性组分，用标准轻油微反方法（MAT）对各催化剂样品进行性能评价，重点考察了添加不同锰含量的USL沸石对催化剂活性、比积炭、气体产物组成、氢转移反应活性、汽油辛烷值等的影响。研究结果表明，裂化催化剂中加入一定量Mn改性的USL沸石后，可以提高催化剂的反应活性，降低比积炭，并可以在降低裂化汽油中烯烃含量的同时提高异构烷烃的含量，汽油的辛烷值变化不大。     

加工中间基原料MIP工艺专用催化剂RMI Ⅱ的开发

石油化工科学研究院针对MIP工艺加工中间基原料油，采用较常规REUSY沸石具有更好的重油裂化能力、汽油降烯烃性能以及具有良好焦炭选择性的可接近性改善的AIRY沸石，研制了RMI Ⅱ专用催化剂。实验室评价结果表明，RMI Ⅱ专用催化剂的重油裂化与抗碱氮中毒、汽油降烯烃、增产丙烯等性能均优于常规裂化催化剂。中试放大试验结果表明，RMI Ⅱ专用催化剂中试大样的重油反应性能很好地重复了小试催化剂的结果，并且催化剂的制备易于在国内现有FCC催化剂生产装置上直接实施生产。     

共凝胶法制备的异构裂化催化剂

共凝胶法制备的异构裂化催化剂１９５９年美国Ｃｈｅｖｒｏｎ公司开发的异构裂化过程（Ｉｓｏｃ－ｒａｃｋｉｎｇ）实现工业化。６０年代该公司用共凝胶法试制成功用于生产中间馏分油的无定型催化剂，７０年代在共凝胶催化剂中引入佛石组分，８０年代沸石催化剂得到推广应...     

新的FCC催化剂

Albemarle公司开发了一种工业化的改进型FCC催化剂——新型专有ADZT100沸石技术。利用这项技术，该公司已经推出了一族新的名为ACTION系列的FCC催化剂。这种新催化剂可以用来提高车用燃料的产量或提高汽油的辛烷值，或两者兼顾。辛烷、作为烷基化原料的LPG烯烃和高度异构化汽油的价值正在不断上升。因此这种新催化剂能够帮助炼油行业在满足对燃料的环保要求的同时提高利润效益。这种催化剂针对两种用途进行设计。ACTIONLV是最大限度增产液体产品的催化剂。这种高剂油比的催化剂在生产最大量液体产品的同时能够改进辛烷值并增产C4烯烃。ACTION BC则是一种适用于重油裂化的催化剂，设计用来裂化重油，改进辛烷值并增产C4烯烃。     

抚顺石化分公司石油二厂处理烷基化废硫酸工艺创效

中国石油抚顺石化分公司石油二厂硫酸装置采用废酸裂解新工艺处理烷基化废硫酸，不仅为企业解决了烷基化废硫酸无法处理的问题，而且解决了烷基化装置生产用98％硫酸的外购问题，为企业节省了大量费用。     

重油催化裂化催化剂RCH的开发与工业应用

RCH催化剂是继我国第一代超稳Y型催化裂化催化剂之后，开发研制的新型渣油裂化催化剂。该剂沸石含量低，而在裂化性能、产品收率、焦炭选择性等方面均与国内外同类型催化剂相当，可替代进口催化剂在重油催化裂化（RFCC）装置上使用；该剂更具有平衡活性和轻质油收率高、稳定性好、裂化重质油能力和抗重金属污染能力强等特点，同时制备工艺先进，流程简单，属国际先进水平。     

AlkyClean公司开发清洁烷基化新工艺

<正>雅保公司、耐斯特石油公司和鲁姆斯技术公司合资的AlkyClean公司与美国化学会于2010年2月签署协议,开发生产烷基化油的清洁替代工艺。这项已在芬兰耐斯特石油公司Porvoo炼油厂中型装置经过验证的新工艺采用新型固体沸石催化剂,不产生废料和聚合物副产物。直到目前为止,生产烷基化油仍要用大量硫酸或氢氟酸催化剂。这两种催化剂都是危险化学品。硫酸催化剂有     

Sulfated Nickel Zeolite Catalyst Characterization

Sulfated nickel/Y-zeolite catalyst has been prepared via impregnation technique. The incorporation of the prepared nickel sulfate precursor into the zeolite support structure has been investigated by using different characterization techniques. The activity and selectivity of the prepared sulfated nickel/Y-zeolite catalyst have been studied through cumene conversion reaction using a catalytic flow system operated under atmospheric pressure and at reaction temperature ranging between 300-425°C. The influence of sulfate species on promoting the catalytic activity toward the formation of the various products, mainly the heavy alkylated benzenes, has also been followed. The data obtained indicated that sulfate species play a dual role as a source of higher acidity and oxidizing character exerted from their induction effect on nickel metal and the hydration factor of the sulfuric acid used or the polynucleated sulfate species formed upon calcination.     

Sulfated Nickel Zeolite Catalyst Characterization

Abstract:

Sulfated nickel/Y-zeolite catalyst has been prepared via impregnation technique. The incorporation of the prepared nickel sulfate precursor into the zeolite support structure has been investigated by using different characterization techniques. The activity and selectivity of the prepared sulfated nickel/Y-zeolite catalyst have been studied through cumene conversion reaction using a catalytic flow system operated under atmospheric pressure and at reaction temperature ranging between 300–425°C. The influence of sulfate species on promoting the catalytic activity toward the formation of the various products, mainly the heavy alkylated benzenes, has also been followed. The data obtained indicated that sulfate species play a dual role as a source of higher acidity and oxidizing character exerted from their induction effect on nickel metal and the hydration factor of the sulfuric acid used or the polynucleated sulfate species formed upon calcination.     

Structure and catalytic properties of dealuminated modified zeolites Y

The effect of treatment with a zirconyl nitrate aqueous solution on the structure; the hydroxyl-layer constitution; and the adsorptive, acid, and catalytic properties of dealuminated zeolite Y was studied. The zeolite was prepared by boiling NH₄Y in an ethylenediaminetetraacetic acid disodium salt solution followed by ion exchange with ammonium chloride and calcination in a 100% steam flow at 750°C. X-ray diffraction, IR spectroscopy, and DTA data show the formation of an ultrastable form of zeolite Y. The incorporation of zirconium in zeolite led to an increase in the proportion of strong acid sites, thus raising the yield of cracking products during n-hexane conversion tested on platinum-containing catalyst samples.     

Effect of Water Vapour on the Acidity of ZSM-5 Zeolite Used for Catalytic Cracking of Naphtha to Manufacture Ethylene and Propylene

The change in acidity of the ZSM-5 zeolite was investigated after it was treated with water vapour, and its capability on ammonia adsorption was also studied after having adsorbed water vapour. The effect of water vapour on products distribution was studied during catalytic cracking of naphtha, the changes in the adsorption ability and catalytic performance of the ZSM-5 zeolite was investigated after the catalyst was loaded with phosphorus species. These results all indicated that water vapour could reduce the acid strength and acid density of ZSM-5 zeolite and affect the capability of ZSM-5 on adsorption of gases, therefore the activated energy contributed by the ZSM-5 zeolite to the catalytic cracking reaction would be low to prevent the feedstock from deepened catalytic cracking and coke formation.     

Synthesis of La-Modified Ultra Stable Zeolite L and Its Application to Catalytic Cracking Catalyst

A new type of zeolite La-USL (ultra stable zeolite L (zeolite USL) modified by La), which has superior activity, stability and selectivity in catalytic cracking of hydrocarbons and thus can be used as an active catalyst component, is reported in this paper. The zeolite L with relative crystallinity of above 90% was synthesized by the hydrothermal crystallization method under optimum conditions and characterized by means of XRD, NH3-TPD and isotherm adsorption techniques. The in-situ synthesized zeolite L with a SiO2/Al2O3 mole ratio of 5-6 was modified by cation ion exchange, hydrothermal dealumination and chemical modifications with La in order to prepare La-containing USL with a higher framework SiO2/Al2O3 mole ratio of 15-30. The modified zeolite La-USL was used as an active additive component of fluid catalytic cracking (FCC) catalyst and the resulting catalysts were evaluated by microactivity test (MAT) and fixed-fluidized bed (FFB) experiments using heavy oil as feedstock. The influence of La content in La-USL on cracking product distribution, gasoline group composition and research octane number (RON) was investigated. The results showed that when La content in La-USL was 0.8 wt%, the addition of the corresponding La-USL could result in a FCC catalyst that produced significant improvement in product distribution and gasoline quality.     

铌酸催化合成环戊醇

以铌酸为主催化剂、三(3,6-二氧杂庚基)胺(TDA-1)为助催化剂,以环戊烯和水为原料,通过水合加成反应合成了环戊醇;考察了原料配比、反应温度、反应时间、催化剂用量、助催化剂种类等因素对环戊醇收率的影响;并用红外光谱表征了产物的结构。实验结果表明,与三乙胺、四丁基溴化铵和四丁基硫酸氢铵相比,TDA-1的助催化效果最好;铌酸的催化活性明显高于DNW-1阳离子交换树脂、固体酸、沸石和硫酸。该反应的最佳工艺条件为:环戊烯用量1.0mol,n(水)∶n(环戊烯)=4.0,铌酸用量4.0g,TDA-1用量0.8g,反应温度120℃,反应压力1.2MPa,反应时间4.0h。在此条件下,环戊醇的收率为68.1%,产品纯度为99.1%。     

Catalytic cracking of isopropylbenzene over hybrid HZSM-12/M41S (M41S = MCM-41 or MCM-48) micro-mesoporous materials

The catalytic cracking of isopropylbenzene was investigaded over hybrid ZSM-12/MCM-41 and HZSM-12/MCM-48 micro-mesoporous materials, in order to verify the effect of the acid site of the accessibility of mesoporous channels combined with the acid sites into the zeolite. The hybrid materials were synthesized by the hydrothermal method using the template mechanism. The obtained materials were characterized by X-ray diffraction and BET isotherms using nitrogen adsorption-desorption at 77 K. The X-ray diffraction patterns presented characteristic peaks of the microporous and mesoporous phases. These analysis revealed the formation of ordered hexagonal MCM-41 or cubic MCM-48 mesoporous phases, associated with the ZSM-12 structure. In order to generate acid sites, the materials were ion exchanged with ammonium chloride solution. The calcined hybrid materials were tested as catalyst for cracking of isopropyl-benzene, using a fixed bed reactor at 450 ^oC and nitrogen gas. The catalytic tests showed that the HZSM-12/AlMCM-41 and HZSM-12/MCM-48 hybrid materials have potential for use in cracking reactions, bening more active than the zeolite or the M41S alone. The catalytic activities of the hybrid materials can be associated with a synergistic effect between the acid sites present on the zeolitic phase and the mesoporous phase. In order to verify how the structure of the hybrid materials may affect and control their catalytic performances, the results were compared with HZSM-12 physically mixed with MCM-41 and MCM-48.     

以苏州高岭土为原料合成ZSM-5分子筛

以苏州高岭土为原料,在水热体系中成功地合成了ZSM-5分子筛.采用XRD,SEM,FT-IR及N2吸附手段对合成的ZSM-5分子筛的结构及酸性分布进行了表征;以大庆VGO为原料,在重油微反装置上对合成的ZSM-5分子筛催化剂进行了催化性能评价.结果表明,这种ZSM-5分子筛与化学合成法得到的ZSM-5分子筛物化性质类似,具有良好的结晶度.这种合成的ZSM-5分子筛中强酸都是以B酸为主,L酸量较少,有利于催化裂化反应的进行;这种合成的ZSM-5分子筛催化剂作为普通催化裂化催化剂的添加剂,使丙烯收率由7.12%上升到9.78%,液化石油气收率由22.97%上升到29.88%,对丙烯具有较好的选择性,增产丙烯效果明显.     

[HSO3-b-N(CH3)3]HSO4/SiO2催化剂上苯基羟胺Bamberg重排制备对氨基苯酚

在硝基苯加氢合成对氨基苯酚过程的Bamberg重排反应中,采用酸性离子液体来替代硫酸催化剂。设计并合成出了一种新型的含有-SO3H基团的季铵型酸性离子液体N,N,N-三甲基-N-磺丁基硫酸氢铵([HSO3-b-N(CH3)3]HSO4),并与另3种离子液体1-磺丁基-3-甲基咪唑硫酸氢盐([HSO3-bmim]HSO4)、N,N-二乙基硫酸氢铵([(CH3CH2)2NH2]HSO4)及N,N,N-三甲基硫酸氢铵([(CH3)3NH]HSO4)的酸性质进行了对比,考察了这些离子液体在苯基羟胺Bamberg重排制备对氨基苯酚反应中的催化性能。为了减少离子液体的用量和便于回收催化剂,采用溶胶-凝胶法制备出负载型离子液体催化剂[HSO3-b-N(CH3)3]HSO4/SiO2,并对其催化性能进行了研究。结果表明,该催化剂在苯基羟胺Bamberg重排制备对氨基苯酚反应中具有较高的催化活性,在离子液体与苯基羟胺摩尔比为0.5、反应温度85℃、反应时间30 min的条件下,苯基羟胺转化率100%,对氨基苯酚选择性60.5%。     

Y型分子筛/介孔氧化铝核壳结构复合物的制备及其在重油裂化中的应用

制备了核-壳结构Y型分子筛/介孔氧化铝复合物,所制备复合物具有Y型沸石分子筛核心和虫洞状介孔氧化铝壳层。以所制备复合物为活性组分的催化裂化催化剂具有大比表面、大孔体积以及良好的大分子酸性位可接近等物理结构特性,从而显示了优良的重油催化裂化性能。与以单纯Y型沸石为活性组分的催化剂相比,所制备催化剂重油转化率增加了2.73个百分点,重油产率和焦炭产率分别下降了2.23和1.28个百分点。