Large crystal molecular sieves and their manufacture,申请号US200912865679-传众专利搜索

Large crystal molecular sieves and their manufacture

申请公布号：US9296619(B2)

申请号：US200912865679

申请日期：2009.01.19

申请公布日期：2016.03.29

申请人：

ExxonMobil Chemical Patents Inc.

发明人：Roth Wieslaw Jerzy;Kennedy Carrie L.;Yorke Thomas

分类号：C07C1/20;C01B39/38;B01J29/06;B01J29/40;C01B39/46

主分类号：C07C1/20

代理人：Tyus Darryl M.

地址：Baytown TX US

摘要：A process for the manufacture of large crystal size synthetic porous crystalline molecular sieve requires an aqueous reaction mixture that is organic structure directing agent-free, has a H2O/MOH molar ratio (M is an alkali metal) of 75 or less, a source of X2O3 (X is a trivalent element) and a source of YO2 (Y is a tetravalent element). The source of X2O3 and YO2 is an amorphous material containing both X2O3 and YO2 and having a YO2/X2O3 molar ratio of 15 to 40. The resultant highly crystalline novel materials have crystals with at least one dimension greater than 1 μm, such as greater than 3 μm.

主权项：1. A process for the manufacture of a synthetic porous crystalline molecular sieve comprising the steps of: (a) forming an aqueous reaction mixture that is free of organic-containing structure directing agent and consisting of a source of X2O3, a source of YO2, and a source of metal hydroxide MOH, wherein X is a trivalent element, Y is a tetravalent element and M represents an alkali metal, and wherein the aqueous reaction mixture has: (i) a molar ratio of H2O/MOH that is 75 or less, and(ii) at least a portion of the X2O3 and the YO2 provided by an amorphous material containing both X2O3 and YO2, the amorphous material having a YO2/X2O3 molar ratio within the range of from 15 to 40; (b) crystallizing the reaction mixture to produce the porous crystalline molecular sieve; and (c) recovering the synthetic porous crystalline molecular sieve.