公开(公告)号：US10421666B2

公开(公告)日：2019-09-24

申请号：US15615969

申请日：2017-06-21

Applicant: UNIVERSITY OF HOUSTON SYSTEM

Inventor： Jeffrey D. Rimer ,  Miguel Maldonado ,  Matthew D. Oleksiak

IPC: C01B39/46 ,  C01B39/52 ,  B01J29/70 ,  C01B39/02 ,  C01B39/50

Abstract: Methods of controlling crystal polymorphism in organic-free synthesis of Na-Zeolites and the zeolite crystals formed using those methods are provided. The methods disclosed herein create certain types of zeolite crystals more efficiently than other previously known methods. The methods also create certain types of zeolite crystals in a form and concentration not previously disclosed. The methods disclosed herein generally comprise using solutions with varying ratios of silicon (Si), aluminum (Al), hydroxide (OH), and water. Some implementations of the invention disclosed include efficient methods of producing nearly pure cancrinite (CAN), methods of obtaining sodalite in solutions with a high Si/Al ratio, and a method of forming thin, platelet-like ANA crystals with a width of less than about 1 μm and a length of at least about 3 μm.

公开(公告)号：US12024452B2

公开(公告)日：2024-07-02

申请号：US17878258

申请日：2022-08-01

Applicant: University of Houston System

Inventor： Jeffrey D. Rimer ,  Xi Geng ,  Ricardo Sosa

IPC: C02F5/10

CPC classification number: C02F5/10

Abstract: Analogues of citrate, namely hydroxycitrate (HCA) and isocitrate (ICA), have dual roles as nucleation inhibitors and growth suppressors in the formation of mineral scale. Their potency is comparable to commercial phosphorous-based inhibitors, but they are more environmentally friendly, which has practical advantages for use in a broad range of commercial applications.

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：US20190216756A1

公开(公告)日：2019-07-18

申请号：US16366094

申请日：2019-03-27

Applicant: University of Houston System

Inventor： Jeffrey D. Rimer ,  Jihae Chung ,  John Asplin

IPC: A61K31/194 ,  A61K45/06 ,  C07C59/245

CPC classification number: A61K31/194 ,  A61K45/06 ,  C07C59/245

Abstract: In an embodiment of the present disclosure, there is provided a composition for dissolving calcium oxalate crystals thereby inhibiting/preventing further growth of crystals. In some embodiments, such a composition comprises at least one stereoisomer of hydroxycitrate, a derivative of the organic acid citrate. Such a method comprises administering to the subject an effective amount of the aforementioned composition. In another embodiment, the present disclosure pertains to a method of treating kidney stone disorder. Such a method comprises administering to a subject in need thereof a therapeutically effective amount of the aforementioned composition. In yet another embodiment, the present disclosure relates to a method of treating calcium oxalate stone disease. In an embodiment, the method comprises administering to a subject in need thereof a therapeutically effective amount of the aforementioned composition.

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.