skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Rapid synthesis of beta zeolites

Abstract

The invention provides methods for rapidly synthesizing heteroatom containing zeolites including Sn-Beta, Si-Beta, Ti-Beta, Zr-Beta and Fe-Beta. The methods for synthesizing heteroatom zeolites include using well-crystalline zeolite crystals as seeds and using a fluoride-free, caustic medium in a seeded dry-gel conversion method. The Beta zeolite catalysts made by the methods of the invention catalyze both isomerization and dehydration reactions.

Inventors:
; ; ;
Publication Date:
Research Org.:
University of Massachusetts, Boston, MA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1210887
Patent Number(s):
9,108,190
Application Number:
14/025,557
Assignee:
University of Massachusetts (Boston, MA) DOESC
DOE Contract Number:
SC0001004
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Sep 12
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; 10 SYNTHETIC FUELS

Citation Formats

Fan, Wei, Chang, Chun -Chih, Dornath, Paul, and Wang, Zhuopeng. Rapid synthesis of beta zeolites. United States: N. p., 2015. Web.
Fan, Wei, Chang, Chun -Chih, Dornath, Paul, & Wang, Zhuopeng. Rapid synthesis of beta zeolites. United States.
Fan, Wei, Chang, Chun -Chih, Dornath, Paul, and Wang, Zhuopeng. Tue . "Rapid synthesis of beta zeolites". United States. doi:. https://www.osti.gov/servlets/purl/1210887.
@article{osti_1210887,
title = {Rapid synthesis of beta zeolites},
author = {Fan, Wei and Chang, Chun -Chih and Dornath, Paul and Wang, Zhuopeng},
abstractNote = {The invention provides methods for rapidly synthesizing heteroatom containing zeolites including Sn-Beta, Si-Beta, Ti-Beta, Zr-Beta and Fe-Beta. The methods for synthesizing heteroatom zeolites include using well-crystalline zeolite crystals as seeds and using a fluoride-free, caustic medium in a seeded dry-gel conversion method. The Beta zeolite catalysts made by the methods of the invention catalyze both isomerization and dehydration reactions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 18 00:00:00 EDT 2015},
month = {Tue Aug 18 00:00:00 EDT 2015}
}

Patent:

Save / Share:
  • A process is described for producing iso-olefins which comprises contacting a feedstock comprising at least one n-olefin with a catalyst comprising a boron-beta zeolite containing sufficient boron to provide sufficient acidity in said zeolite to catalyze the structural isomerization of said n-alkene to iso-alkenes.
  • A method is described for preparing a catalyst composition for processing high nitrogen-containing oils comprising a boron-containing crystalline material having the structure of zeolite ZSM-5, ZSM-11, ZSM-12, Beta or Nu-1. The sequential steps of synthesizing a boron-containing crystalline material having the structure of zeolite ZSM-5, ZSM-11, ZSM-12, Beta or Nu-1 are: drying the crystalline material at a temperature of from about ambient to less than about 170/sup 0/C; calcining the dried crystalline material in an oxygen- and water-free environment of anhydrous ammonia, anhydrous nitrogen, other anhydrous inert gases or a mixture thereof at a temperature of from about 200/sup 0/more » to about 600/sup 0/C to minimize hydrolysis of boron in the boron-containing crystalline material; adsorbing ammonia on the calcined crystalline material; contacting the crystalline material with an ion-exchange solution at a pH of from about 7 to about 11; compositing the ion-exchange solution contacted crystalline material with an inorganic oxide material; drying the composite at a temperature of from about ambient to less than about 170/sup 0/C and calcining the dried composite at a temperature of from about 200/sup 0/ to about 600/sup 0/C.« less
  • A process is described for converting an alcohol and/or ether feed as hereinafter defined to a hydrocarbon mixture rich in olefins which comprises contacting, under conversion conditions at a conversion reaction temperature of from about 300/sup 0/ to 350/sup 0/C., a feed comprising one or more monohydric alcohols having from about 1 to about 4 carbon atoms, ethers derived therefrom, or mixtures of the alcohols and ethers, with a modified crystalline metalosilicate shape selective acidic zeolite. The metalosilicate is selected from the group consisting of aluminum, gallium, and mixtures thereof, and the zeolite, prior to modification and in the absencemore » of any coke deposited thereon, possesses: (a) the capability of catalyzing the alcohol and/or other conversion reaction; (b) a channel size and structure such as to permit (i) entry of the feed into the zeolite and diffusion to the active acid sites within the zeolite, and (ii) formation of olefin products within the zeolite and diffusion of the products out of the zeolite; and (c) hydrothermal stability at temperatures of at least about 290/sup 0/C. The modification of the zeolite is conducted in a manner sufficient to increase the catalyst life of the zeolite, relative to the absence of the modification when the zeolite is employed as a catalyst for the alcohol and/or ether conversion reaction.« less
  • Methods and apparatus for the preparation and use of a substrate having an array of diverse materials in predefined regions thereon. A substrate having an array of diverse materials thereon is generally prepared by delivering components of materials to predefined regions on a substrate, and simultaneously reacting the components to form at least two materials. Materials which can be prepared using the methods and apparatus of the present invention include, for example, covalent network solids, ionic solids and molecular solids. More particularly, materials which can be prepared using the methods and apparatus of the present invention include, for example, inorganicmore » materials, intermetallic materials, metal alloys, ceramic materials, organic materials, organometallic materials, non-biological organic polymers, composite materials (e.g., inorganic composites, organic composites, or combinations thereof), etc. Once prepared, these materials can be screened for useful properties including, for example, electrical, thermal, mechanical, morphological, optical, magnetic, chemical, or other properties. Thus, the present invention provides methods for the parallel synthesis and analysis of novel materials having useful properties.« less
  • A process for the rapid synthesis of metal oxide nanoparticles at low temperatures and methods which facilitate the fabrication of long metal oxide nanowires. The method is based on treatment of metals with oxygen plasma. Using oxygen plasma at low temperatures allows for rapid growth unlike other synthesis methods where nanomaterials take a long time to grow. Density of neutral oxygen atoms in plasma is a controlling factor for the yield of nanowires. The oxygen atom density window differs for different materials. By selecting the optimal oxygen atom density for various materials the yield can be maximized for nanowire synthesismore » of the metal.« less