求翻译这段英文Catalyst from a Perstorp Formox formaldehyde plant, o

求翻译这段英文
Catalyst from a Perstorp Formox formaldehyde plant, operating with high inlet concentration of methanol (10.2 vol.%), was discharged from
single tubes of a multi-tube reactor after half the expected lifetime of the catalyst and again after termination of the load. Each tube was filled with
two different layers of catalyst. From the inlet of the reactor the first layer was a catalyst mixed with inert rings, which was followed by a second
layer of pure catalyst extending from the middle to the outlet of the reactor. Catalyst fractions from the two layers were characterized with various
techniques including BET, Fourier transform Raman (FT-Raman) spectroscopy, X-ray diffraction (XRD), elemental analysis with atomic
absorption spectroscopy (AAS) and activity measurements. It was found that the surface area of the catalyst in the mixed layer increases during
operation while a small decrease is noticeable for the catalyst below in the pure layer. Elemental analysis, XRD and FT-Raman show that during
operation of the catalyst there is migration of Mo species from the upper part of the reactor towards the outlet. Activity measurements reveal severe
deactivation of the catalyst in the mixed layer. It is concluded that the deactivation primarily is due to formation of volatile species formed by the
MoO3 surface reacting methanol, causing a decrease of the MoO3/Fe2(MoO4)3 mole ratio in the catalyst. Concerning the catalyst in the pure layer,
the condensation of needle-like crystals of MoO3 mainly occurs on the external surface of the catalyst ring.
# 2005 Elsevier B.V. All rights reserved.
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从瑞典原产地甲醛装置催化剂，具有高甲醇入口浓度的操作（10.2体积%），被排出，排泄管的管式反应器的预期寿命多半年后的催化剂和负载终止后再。每个管填充两层不同的催化剂。从反应器的第一层的入口是一个催化剂混合惰性环，其次是二纯催化剂从中间到反应器的出口延伸。具有各种技术包括催化剂组分比的两个层，傅里叶变换拉曼光谱（FT-拉曼）光谱，X-射线衍射（XRD）和原子吸收光谱，元素分析（AAS）和活性测定。...

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