用XPS考察了制备温度,钝化气氛和氢还原活化温度对Mo2N催化剂表面的影响,在400℃氨可将MoO3中的Mo还原到+4价;继续升温到700℃氨还原后,则Mo^2+成为主要组分,钝化样品的表面存在着来自氨的吸附氨和晶格氮两种不同的形式.而在表面钝化过程中引入的氧则在催化剂表面形成氧化薄层.经高温氢还原后,80%以上的氧物种...
还原后,表面的OƒMo原子比仍在014～015之间。结合其他常规测试结果,对表面活性中心进行 了初步的推测。 关键词碳化钼X射线光电子能谱甲烷化 前言1 碳化钼具有一系列独特的物理和化学性质,又是一种很有希望的催化新材料。早在二十 多年前,由于发现了它有类似于Pt的卓越催化性能而受人注目 1 。但沿用传统的工...
2N O3 454 3 Na Auger 505 0 Mo 3s 546 3 Au 4p3 591 0 Ru 3s 295 6 Dy 4p3 334 0 Au 4d5 376 0 Gd 4s 408 0 Cd 3d 455 1Ti O 507 0 At 4d5 548 0 Os 4p1 593 6 W 4s 295 7K 2p1 335 0 Pd 3d5 376 2 Nb 3p1 411 0 Tb Auger 456 0Ti 2p 507 5 Sn loss548 1 Cu...
Model: GS8011-EX-ACBrand: CHENZHUDes:Number of channel: 1 Input/1OutputSupply Voltage: 170-250V ACInput signal: Switch or NAMUR Proximity DetectorOutput signal: Relay SINAMICS G120X CU USS EV2000-4T0110G GKR05-2 Y VAK FKSRS071-33 R77 DRS90M4/AL 30.1344079301.0001.10 Reducer S37, DRS7...
例如:3d5/2l=2j=5/2n=3再如:C 1S 主量子数1,角量子数l=0,内量子数为1/2,一般略去。7.1.6电子结合能用χ射线照射固体时,由于光电效应,原子的某一能级的电子被击出物体之外,此电子称为光电子。如果χ射线光子的能量为hν,电子在该能级上的结合能为Eb,射出固体后的动能为Ek,则它们之间的关系为: h...
27 Sn4d SnCl4(((CH3)2N)3PO)2 27.1 Sn4d SnCl2 . 2H2O 27.1 Ta4f TaCl5 27.53 O2s O boehmite (AlO(OH) gamma) (treated at 473K) 27.6 Sn4d SnF4 27.6 Ta4f TaF5 28.12 O2s O boehmite (AlO(OH) gamma) (treated at 393K) 28.5 Ta4f5/2 Ta2O5 in ox lms surfaces of Ti-Zr and ...
Wagner 磁极控制器 754-EP360/30 Artikel-Nr.: 1039741 instead of 569055 BOFA 过滤器 A1030156 hydac 滤芯 0110 D 003 BH4HC Tecsis 热电偶温度计 TEP11X221366 Erb GmbH Messtechnik & Co KG 控制屏 454-10000 Tecsis 热电偶温度计 TEP11X221366 ...
R911309085 (伺服)Rexroth GTS180-MO2-050B16R911288595 (伺服)Rexroth 2AD134B-B35OA1-FS07-D2N1R911310321 (伺服)Rexroth VAC30.1N-NN/S001LTMR27PFM (低价)马达保护器R911270514 (伺服)Rexroth MDD112A-N-020-N2L-130PA1R911312283 (伺服)Rexroth GTE060-NN2-040B-NN428LSA36.E2045D200-0 (优势)...
Jianjun Liang1 & Qiaohui Fan1 The sorption of Ni(II) on a calcareous aridisol (CA) soil, one of the major soil types in northwestern China, was investigated using batch and extended X-ray absorption fine structure (EXAFS) approaches in a 0.01 mol/L NaClO4 solution at different ...
Place 3.00 g H24Mo7N6O24·4 H2O in a clean crucible and react in a muffle furnace at a heating rate of 5 ℃/min for 4 h at 500 ℃ to obtain MoO3. Grind 1 g MoO3 with 5.00 g NaH2PO2·H2O, placed in a ceramic boat, and reacted at a 3 ℃/min heating rate for 2 h at ...