Chromium catalyst materials and methods for making and using the same from chromium(VI) free sources

    公开(公告)号:US10646853B2

    公开(公告)日:2020-05-12

    申请号:US15865517

    申请日:2018-01-09

    发明人: Vladimir Fridman

    摘要: The present disclosure relates to methods for making chromium-containing dehydrogenation catalysts using chromium feedstocks that need not include chromium(VI). The disclosure also relates to the catalysts made thereby, as well as to dehydrogenation methods using such catalysts. In one aspect of the disclosure, a method includes providing a formable mixture comprising, on a dry basis, an aluminum hydroxide, present in an amount within the range of about 40 wt. % to about 90 wt. %; an acid (e.g., nitric acid), present in an amount within the range of about 2 wt. % to about 15 wt. %; and a chromium(III) source, present in an amount within the range of about 2 wt. % to about 35 wt. %; forming the formable mixture; and calcining the formed mixture. In certain embodiments, the method further includes impregnating the calcined mixture with an aqueous impregnation solution including a chromium(III) salt; and calcining the impregnated mixture.

    NON-REVERSIBLE HUMIDITY INDICATOR CARD
    44.
    发明申请

    公开(公告)号:US20180356379A1

    公开(公告)日:2018-12-13

    申请号:US15986909

    申请日:2018-05-23

    IPC分类号: G01N31/22

    CPC分类号: G01N31/222 B65D79/02

    摘要: The present invention is directed to methods for preparing and using a substrate having a deliquescent-containing area for a non-reversible humidity indicator card. Embodiments provided herein also are directed to formulations that are utilized with such cards, as well as the approach of dispensing a composition with a deliquescent material in solution upon a card that can be used as a non-reversible humidity indicator.