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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Format | Patent |
Language | English 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. |
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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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Title | ALUMINA CARRIER, METHOD OF PREPARING THE SAME, AND SILVER CATALYST |
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