ALUMINA CARRIER, METHOD OF PREPARING THE SAME, AND SILVER CATALYST

The present invention provides an -alumina carrier, comprising the elements of lanthanum and silicon both dispersed in the interior and on the surface of the carrier. The mass ratio of the element of lanthanum to the element of silicon is in the range from 0.1:1 to 20:1. The inventors of the present...

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Main Authors SUN XINXIN, XUE QIAN, CAO SHUYUAN, LI XIANFENG, CHEN JIANSHE, ZHANG ZHIXIANG, LI JINBING, LIANG RUJUN, WANG HUI, GAO LIXIN
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LanguageEnglish
Korean
Published 08.05.2015
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Abstract The present invention provides an -alumina carrier, comprising the elements of lanthanum and silicon both dispersed in the interior and on the surface of the carrier. The mass ratio of the element of lanthanum to the element of silicon is in the range from 0.1:1 to 20:1. The inventors of the present invention have made extensive researches into the field of the silver catalyst and alumina carrier thereof, and added the elements of lanthanum and silicon (i.e., bulk phase addition) in preparing the alumina carrier used in the silver catalyst. The carrier thus obtained contains the elements of silicon and lanthanum both in the interior and on the surface thereof, and has improved specific surface area and strength. The silver catalyst prepared with the carrier can react in a low reaction temperature (has a high reaction activity) and has a high selectivity in producing ethylene oxide through oxidation of ethylene. 본 발명은 란탄 및 실리콘 원소 모두가 캐리어의 내부 및 표면 상에 분산되어 있는 α-알루미나 캐리어를 제공한다. 란탄 원소 대 실리콘 원소의 질량비는 0.1:1 내지 20:1의 범위이다. 본 발명의 발명자들은 은 촉매 및 은 촉매의 알루미나 캐리어 분야에 대해 광범위한 연구를 수행하고, 은 촉매에 사용되는 알루미나 캐리어를 제조하는 공정에서 란탄 및 실리콘 원소를 첨가했다(즉, 벌크상 첨가). 이렇게 해서 얻어진 캐리어는 캐리어 내부 및 표면 상에 실리콘과 란탄 원소 모두를 함유하고, 향상된 비표면적 및 강도를 가진다. 상기 캐리어를 사용하여 제조된 은 촉매는 낮은 반응 온도에서 반응할 수 있고(높은 반응 활성도를 가짐), 에틸렌의 산화를 통한 에틸렌 옥사이드의 제조에서 높은 선택성을 가진다.
AbstractList The present invention provides an -alumina carrier, comprising the elements of lanthanum and silicon both dispersed in the interior and on the surface of the carrier. The mass ratio of the element of lanthanum to the element of silicon is in the range from 0.1:1 to 20:1. The inventors of the present invention have made extensive researches into the field of the silver catalyst and alumina carrier thereof, and added the elements of lanthanum and silicon (i.e., bulk phase addition) in preparing the alumina carrier used in the silver catalyst. The carrier thus obtained contains the elements of silicon and lanthanum both in the interior and on the surface thereof, and has improved specific surface area and strength. The silver catalyst prepared with the carrier can react in a low reaction temperature (has a high reaction activity) and has a high selectivity in producing ethylene oxide through oxidation of ethylene. 본 발명은 란탄 및 실리콘 원소 모두가 캐리어의 내부 및 표면 상에 분산되어 있는 α-알루미나 캐리어를 제공한다. 란탄 원소 대 실리콘 원소의 질량비는 0.1:1 내지 20:1의 범위이다. 본 발명의 발명자들은 은 촉매 및 은 촉매의 알루미나 캐리어 분야에 대해 광범위한 연구를 수행하고, 은 촉매에 사용되는 알루미나 캐리어를 제조하는 공정에서 란탄 및 실리콘 원소를 첨가했다(즉, 벌크상 첨가). 이렇게 해서 얻어진 캐리어는 캐리어 내부 및 표면 상에 실리콘과 란탄 원소 모두를 함유하고, 향상된 비표면적 및 강도를 가진다. 상기 캐리어를 사용하여 제조된 은 촉매는 낮은 반응 온도에서 반응할 수 있고(높은 반응 활성도를 가짐), 에틸렌의 산화를 통한 에틸렌 옥사이드의 제조에서 높은 선택성을 가진다.
Author LI XIANFENG
CHEN JIANSHE
WANG HUI
CAO SHUYUAN
GAO LIXIN
SUN XINXIN
LI JINBING
ZHANG ZHIXIANG
XUE QIAN
LIANG RUJUN
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Snippet The present invention provides an -alumina carrier, comprising the elements of lanthanum and silicon both dispersed in the interior and on the surface of the...
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PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
Title ALUMINA CARRIER, METHOD OF PREPARING THE SAME, AND SILVER CATALYST
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