EFFECT OF SUPPORT PORE STRUCTURE ON Pd-CATALYST ACTIVITY AND SELECTIVITY

The results from the tests in reaction temperature and space velocity suggest the reaction ofnitrite with CO is limited by pore diffusion resistance above 354 K.The effect of alumina and carbonsupports with different pore structure on the activity and selectivity of Pal-catalysts showed that thesupport with reasonable pore structure such as α-Al_2O_3 was favorable for the activity and selectivity ofthe catalyst.     

THE SYNTHESIS AND STRUCTURE OF A NEW MICROPOROUS BERYLLOPHOSPHATE （BeHPO＿4·H＿2O）

ＴＨＥ　ＳＹＮＴＨＥＳＩＳ　ＡＮＤ　ＳＴＲＵＣＴＵＲＥ　ＯＦ　Ａ　ＮＥＷ　ＭＩＣＲＯＰＯＲＯＵＳ　ＢＥＲＹＬＬＯＰＨＯＳＰＨＡＴＥ　（ＢｅＨＰＯ＿４·Ｈ＿２Ｏ）￥ＬｏｎｇＹＵ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，ＬｉａｏｎｉｎｇＵｎｉｖｅｒｓ...     

Synthesis and Crystal Structural Characterization of （NH＿4）＿5H＿3Mn＿3V＿（12）O＿（40）·15H＿2O

ＳｙｎｔｈｅｓｉｓａｎｄＣｒｙｓｔａｌＳｔｒｕｃｔｕｒａｌＣｈａｒａｃｔｅｒｉｚａｔｉｏｎｏｆ（ＮＨ＿４）＿５Ｈ＿３Ｍｎ＿３Ｖ＿（１２）Ｏ＿（４０）·１５Ｈ＿２ＯＷＡＮＧＺｕｏ－Ｐｉｎｇ;ＬＩＵＪｉｎｇ－ｆｕａｎｄＷＡＮＧＥｎ－ｂｏ（Ｄｅｐａｔｍｅｎ...     

SYNTHESIS AND￣（183）W NMR CHARACTERIZATI0N OF α－［P＿2W＿（15）O＿（62）Ti＿3］￣（12－） HFTEROPOLYANION

ＳＹＮＴＨＥＳＩＳ　ＡＮＤ￣（１８３）Ｗ　ＮＭＲ　ＣＨＡＲＡＣＴＥＲＩＺＡＴＩ０Ｎ　ＯＦ　α－［Ｐ＿２Ｗ＿（１５）Ｏ＿（６２）Ｔｉ＿３］￣（１２－）　ＨＦＴＥＲＯＰＯＬＹＡＮＩＯＮＳＹＮＴＨＥＳＩＳＡＮＤ￣（１８３）ＷＮＭＲＣＨＡＲＡＣＴＥＲＩＺＡＴ...     

MOLECULAR AND CRYSTAL STRUCTURE OF （（C6H5）3P）2Ag（CO2H）

<正> C_37 H_31 O_2P_2Ag, Mr = 677. 47. The crystal structure belongs to mon-oclicnic system with space group Cc. Cell constants a =24. 952(2), b = 9. 179(1), c = 15. 262(1) A ,β= 116. 34 (2)°, V= 3132. 9 (3) A3, Z = 4, Dc = 1. 436g/cm3, D0 = 1. 43g/cm3.The final R achieved is 0. 052 for 5677 observed reflections, F (000) = 673. Like other silver complexes, Ag ( I ) in the center of the complex is 4-coordinat-ed. Formic acid anion also acts as a bidentate ligand in this complex beside two triph-enylphosphine groups.     

SYNTHESIS AND CATALYTIC PROPERTY OF POLYSTYRENE SUPPORTED PHENYLALANINE SCHIFF BASE COMPLEX OF Mn（Ⅱ） IN AEROBIC OXIDATION OF CYCLOHEXENE

The polystyrene supported phenylalanine Schiff base complex of Mn(Ⅱ)(PS-Sal-Phe-Mn)was prepared with chloromethylated styrene polymer beads, 2,4-dihydroxybenzaldehyde,L-phenylalanine and manganese(Ⅱ)acetate tetrahyrate., The polymeric ligand and the complex were characterized by FT-IR,, small area X-ray photoelectron spectroscopy(XPS), and ICP-AES. In the presence of the manganese complex, cyclohexene(1)was effectively oxidized by molecular oxygen without reductant. The major products of the reaction were 2-cyclohexen-1-ol(2),2-cyclohexen-1-one(3)and 2-cyclohexen-1- hydroperoxide(4), which was different with typical oxidation of cyclohexene. The influence of reaction temperature and additive for oxidation had been studied. The selectivity of 2-cyclohexen-l-hydroperoxide varied with reaction time and different additives. The mechanism of cyclohexene oxidation had also been discussed.     

SYNTHESIS AND CATALYTIC PROPERTY OF POLYSTYRENE SUPPORTED GLUTAMIC ACID SCHIFF BASE COMPLEX OF Mn（ Ⅱ ） IN AEROBIC OXIDATION OF CYCLOHEXENE

The polystyrene supported glutamic acid Schiff base complex of Mn （ Ⅱ ） （PS-Sal-Glue-Mn） was prepared with chloromethylated styrene polymer beads, 2,4-dihydroxybenzaldehyde, L-glutamic acid and manganese （ Ⅱ ） acetate tetrahyrate. The polymeric ligand and the complex were characterized by FT-IR, small area X-ray photoelectron spectroscopy （XPS） and 1CP-AES. In the presence of the manganese complex, cyclohexene （1） was effectively oxidized by molecular oxygen without reductant. The major products of the reaction were 2-cyclohexen-l-ol （2）, 2-cyclohexen-l-one （3） and 2-cyclohexen-1- hydroperoxide （4）, which was different with typical oxidation of cyclohexene. The influence of reaction temperature and additive for oxidation had been studied. The selectivity of 2-cyclohexen-1-hydroperoxide varied with reaction time and different additives. The mechanism of cyclohexene oxidation had also been discussed.     

STRUCTURE CHARACTERIZATION OF Ru_3（CO）12 IN NaY ZEOLITE BY INFRARED SPECTROSCOPY

ＳＴＲＵＣＴＵＲＥＣＨＡＲＡＣＴＥＲＩＺＡＴＩＯＮＯＦＲｕ_３（ＣＯ）１２ＩＮＮａＹＺＥＯＬＩＴＥＢＹＩＮＦＲＡＲＥＤＳＰＥＣＴＲＯＳＣＯＰＹ￥ＡｎＭｉｎｇＬＩＵ；ＬｉｎＨＵＡＮＧ；ＹｉＤｅＸＵ；ＴａｋａｆｕｍｉＳＨＩＤＯ２）ａｎｄＭａｓａｒｕＩＣＨ?..     

SYNTHESIS AND CRYSTAL STRUCTURE OF V ^（v）O[N（CH2Ch2O）3]

<正> Reaction of ammonium metavanadate with triethanolamine in ethanol yields the title compound (2,2' , 2"-nitrilotriethoxy)oxo-vanadium (Ⅴ ). The crystal and molecular structure has been determined crystallographically. The complex V(v) O[N(CH2CH2O)3] crystallzes in the monoclinic system, space group P21, a = 7.140(1), 6 = 7.474(2), c=8.040(2) A ,β=92. 48(2)°, V=428. 7(1) A3, Mr= 213.1, Z = 2, F(000) = 220,μ= 10. 95cm-1, Dc= 1. 65gcm-3, final R= 0. 032 and Rw = 0. 034 based on 758 independant reflections with I>2σ(I). The vanadium center is in a distorted trigonal bipyramidal environment of a quadridentate chelating ligand and a terminal oxygen atom.     

IN－SITU FTIR AND UV－VISIBLE－NEAR－IR SPECTROELECTROOHEMICAL STUDIES OF MIXED－VALENCE ISOPOLYANION Mo＿6O＿（19）￣（3－） IN APROTIC MEDIA

ＩＮ－ＳＩＴＵ　ＦＴＩＲ　ＡＮＤ　ＵＶ－ＶＩＳＩＢＬＥ－ＮＥＡＲ－ＩＲ　ＳＰＥＣＴＲＯＥＬＥＣＴＲＯＯＨＥＭＩＣＡＬ　ＳＴＵＤＩＥＳ　ＯＦ　ＭＩＸＥＤ－ＶＡＬＥＮＣＥ　ＩＳＯＰＯＬＹＡＮＩＯＮ　Ｍｏ＿６Ｏ＿（１９）￣（３－）　ＩＮ　ＡＰＲＯＴＩＣ　Ｍ...     

PREPARATION， ELECTRICAL PROPERTIES AND CRYSTAL STRUCTURE OF TWO NEW CHARGE－TRANSFER SALTS （BEDT－TTF）＿3Cu＿2Brx AND （TTM－TTF） （Cu＿2Bry） （y～4．72）

ＰＲＥＰＡＲＡＴＩＯＮ，　ＥＬＥＣＴＲＩＣＡＬ　ＰＲＯＰＥＲＴＩＥＳ　ＡＮＤ　ＣＲＹＳＴＡＬ　ＳＴＲＵＣＴＵＲＥ　ＯＦ　ＴＷＯ　ＮＥＷ　ＣＨＡＲＧＥ－ＴＲＡＮＳＦＥＲ　ＳＡＬＴＳ　（ＢＥＤＴ－ＴＴＦ）＿３Ｃｕ＿２Ｂｒｘ　ＡＮＤ　（ＴＴＭ－ＴＴＦ）　（...     

SYNTHESIS AND CRYSTAL STRUCTURE OF Eu[（CH3O）2PO2]3

<正> The title complex has been synthesized and characterized by elementary analysis,FT-IR and Raman spectra. The crystal and molecular structure was determined by X-ray diffraction analysis. The crystal of this complex C6H18O12P3Eu(Mr = 527. 08) is monoclinic with space group P21/c and cell parameters a= 10. 418(2) ,b= 16. 596(6) ,c =10. 766(2) A ,β=111. 67(2)°,V=1729. 8(8) A3 and Z=4. Dimethyl phosphate an-ions coordinate with europium ions through double O-P-O bridges to form a special network of rings-linking-rings. The local coordination geometry of Eu is a slightly distorted octahedron.