公开(公告)号：US20160256858A1

公开(公告)日：2016-09-08

申请号：US15015335

申请日：2016-02-04

Applicant: SHELL OIL COMPANY

Inventor： László DOMOKOS ,  Ralph HASWELL ,  Hong-Xin LI

IPC: B01J29/46 ,  B01J29/44 ,  C01B39/38 ,  B01J29/40

CPC classification number: B01J29/46 ,  B01J29/40 ,  B01J29/405 ,  B01J29/44 ,  B01J37/0009 ,  B01J2229/16 ,  B01J2229/20 ,  B01J2229/42 ,  C01B39/12 ,  C01B39/38 ,  C01B39/40 ,  C07C4/18 ,  C07C2529/40 ,  C07C2529/42 ,  C07C2529/44 ,  C07C2529/46 ,  C07C2529/48 ,  Y02P20/52 ,  C07C15/08

Abstract: A new configuration of ZSM-5 is provided whereby the crystals have a higher average silica to alumina ratio at the edges of each crystallite than in the centre as determined from a narrow slit line scan profile obtained from SEM/EDX or TEM/EDX elemental analysis. Such ZSM-5 crystals are obtained by a preparation process using L-tartaric acid. The new configuration ZSM-5 provides significantly reduced xylene losses in ethylbenzene dealkylation, especially when combined with silica as binder, and one or more hydrogenation metals selected from platinum, tin, lead, silver, copper, and nickel.

公开(公告)号：US20130281757A1

公开(公告)日：2013-10-24

申请号：US13922328

申请日：2013-06-20

Applicant: Shell Oil Company

Inventor： Laszlo DOMOKOS ,  Ralph HASWELL ,  Hong-Xin LI

IPC: C07C4/18 ,  B01J29/46 ,  B01J29/44 ,  B01J29/40

CPC classification number: B01J29/46 ,  B01J29/40 ,  B01J29/405 ,  B01J29/44 ,  B01J37/0009 ,  B01J2229/16 ,  B01J2229/20 ,  B01J2229/42 ,  C01B39/38 ,  C01B39/40 ,  C07C4/18 ,  C07C2529/40 ,  C07C2529/42 ,  C07C2529/44 ,  C07C2529/46 ,  C07C2529/48 ,  Y02P20/52 ,  C07C15/08

Abstract: A new configuration of ZSM-5 is provided whereby the crystals have a higher average silica to alumina ratio at the edges of each crystallite than in the centre as determined from a narrow slit line scan profile obtained from SEM/EDX or TEM/EDX elemental analysis. Such ZSM-5 crystals are obtained by a preparation process using L-tartaric acid. The new configuration ZSM-5 provides significantly reduced xylene losses in ethylbenzene dealkylation, especially when combined with silica as binder, and one or more hydrogenation metals selected from platinum, tin, lead, silver, copper, and nickel.

Abstract translation: 提供了一种ZSM-5的新结构，由此，从SEM / EDX或TEM / EDX元素分析得到的窄缝线扫描轮廓确定，晶体在每个微晶边缘处的平均二氧化硅与氧化铝之比高于中心 。 通过使用L-酒石酸的制备方法获得这样的ZSM-5晶体。 新配置ZSM-5在乙苯脱烷基化中显着降低二甲苯损失，特别是当与二氧化硅作为粘合剂组合时，以及一种或多种选自铂，锡，铅，银，铜和镍的氢化金属。