公开(公告)号：US11866325B2

公开(公告)日：2024-01-09

申请号：US17054861

申请日：2019-05-15

Applicant: University of Houston System

Inventor： Jeffrey D. Rimer ,  Manjesh Kumar

IPC: C01B39/26

CPC classification number: C01B39/265 ,  C01P2002/01 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2004/04 ,  C01P2004/24 ,  C01P2004/64

Abstract: The methods for synthesizing mordenite (MOR) zeolite crystals described herein utilize a combination of organics and produce MOR crystals with reduced size, higher Si/Al ratio, fewer stacking faults, less occluded organics in the final product, and a longer catalyst lifetime.

公开(公告)号：US10662070B2

公开(公告)日：2020-05-26

申请号：US16183862

申请日：2018-11-08

Applicant: University of Houston System

Inventor： Jeffrey D. Rimer ,  Manjesh Kumar

IPC: C01B39/04 ,  B01J29/70 ,  C01B39/48 ,  B01J29/85 ,  C01B39/54 ,  B01J47/00 ,  C30B7/14 ,  C30B29/14 ,  C30B29/34 ,  C30B29/60 ,  B01J29/06 ,  B01J35/00 ,  B01J35/02 ,  B01J29/035

Abstract: Embodiments of the invention generally provide compositions of crystalline zeolite materials with tailored crystal habits and the methods for forming such crystalline zeolite materials. The methods for forming the crystalline zeolite materials include binding one or more zeolite growth modifiers (ZGMs) to the surface of a zeolite crystal, which results in the modification of crystal growth rates along different crystallographic directions, leading to the formation of zeolites having a tailored crystal habit. The improved properties enabled by the tailored crystal habit include a minimized crystal thickness, a shortened internal diffusion pathlength, and a greater step density as compared to a zeolite having the native crystal habit prepared by traditional processes. The tailored crystal habit provides the crystalline zeolite materials with an aspect ratio of about 4 or greater and crystal surfaces having a step density of about 25 steps/μm2 or greater.

公开(公告)号：US10173903B2

公开(公告)日：2019-01-08

申请号：US14305097

申请日：2014-06-16

Applicant: UNIVERSITY OF HOUSTON SYSTEM

Inventor： Jeffrey D. Rimer ,  Manjesh Kumar

IPC: C01B39/04 ,  C01B39/54 ,  B01J47/00 ,  C30B7/14 ,  C30B29/14 ,  C30B29/34 ,  B01J29/70 ,  B01J29/06 ,  B01J29/85 ,  B01J35/00 ,  B01J35/02 ,  B01J29/035

Abstract: Embodiments of the invention generally provide compositions of crystalline zeolite materials with tailored crystal habits and the methods for forming such crystalline zeolite materials. The methods for forming the crystalline zeolite materials include binding one or more zeolite growth modifiers (ZGMs) to the surface of a zeolite crystal, which results in the modification of crystal growth rates along different crystallographic directions, leading to the formation of zeolites having a tailored crystal habit. The improved properties enabled by the tailored crystal habit include a minimized crystal thickness, a shortened internal diffusion pathlength, and a greater step density as compared to a zeolite having the native crystal habit prepared by traditional processes. The tailored crystal habit provides the crystalline zeolite materials with an aspect ratio of about 4 or greater and crystal surfaces having a step density of about 25 steps/μm2 or greater.

公开(公告)号：US20210214237A1

公开(公告)日：2021-07-15

申请号：US17054861

申请日：2019-05-15

Applicant: University of Houston System

Inventor： Jeffrey D. Rimer ,  Manjesh Kumar

IPC: C01B39/26

Abstract: The methods for synthesizing mordenite (MOR) zeolite crystals described herein utilize a combination of organics and produce MOR crystals with reduced size, higher Si/Al ratio, fewer stacking faults, less occluded organics in the final product, and a longer catalyst lifetime.

公开(公告)号：US20190144291A1

公开(公告)日：2019-05-16

申请号：US16183862

申请日：2018-11-08

Applicant: University of Houston System

Inventor： Jeffrey D. Rimer ,  Manjesh Kumar

IPC: C01B39/54 ,  B01J29/70 ,  B01J47/00 ,  C30B7/14 ,  C30B29/14 ,  C01B39/04 ,  C30B29/34

CPC classification number: C01B39/54 ,  B01J29/035 ,  B01J29/06 ,  B01J29/7015 ,  B01J29/85 ,  B01J35/002 ,  B01J35/0033 ,  B01J35/023 ,  B01J47/00 ,  B01J2229/62 ,  C01B39/04 ,  C01P2004/03 ,  C01P2004/20 ,  C01P2004/38 ,  C01P2004/60 ,  C30B7/14 ,  C30B29/14 ,  C30B29/34 ,  C30B29/60

Abstract: Embodiments of the invention generally provide compositions of crystalline zeolite materials with tailored crystal habits and the methods for forming such crystalline zeolite materials. The methods for forming the crystalline zeolite materials include binding one or more zeolite growth modifiers (ZGMs) to the surface of a zeolite crystal, which results in the modification of crystal growth rates along different crystallographic directions, leading to the formation of zeolites having a tailored crystal habit. The improved properties enabled by the tailored crystal habit include a minimized crystal thickness, a shortened internal diffusion pathlength, and a greater step density as compared to a zeolite having the native crystal habit prepared by traditional processes. The tailored crystal habit provides the crystalline zeolite materials with an aspect ratio of about 4 or greater and crystal surfaces having a step density of about 25 steps/μm2 or greater.