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phosphine n.【化學】1.磷化氫;三氫化磷。2.堿性染革黃棕。

phosphite

( c ) land natural productivity increase from 7843 kg / ( hm2 - a ) to 17335 kg / ( hm2 - a ) relate to altitude closely , and the mean rate of enhancing yield is 23 . 53 percent in this region with annual enhancing - rate of 0 . 64 percent in last 15 years . ( d ) there are many facters that have been influe ncing soil effective coefficient that ' s soil organic matter , total nitrogen , effective phosphine and soil texture in turn . in a word , attenuation cause of land productivity is the result of water and soil . ( e ) the forestland potential productivity change from 3986 kg / hm2 to 15034 kg / hm2 , but it has a high distinction between southern aera and north area in yaan city . ( f ) the grassland potential productivity increase from 4085 kg / ( hm2 - a ) to 16973 kg / ( hm2 - a ) , but it has a high classification of potential productivity , ( g ) ditribution map was formed of potential land productivity . ( h ) it could be act as decision support for agriculture development , national land planning and ecotop constructive , etc 5 、土地自然生產潛力水平的主要土壤限制因素為有機質、全氮,其次為速效磷和土壤質地;區域潛在生產力差異的制約因素,主要為土壤,次為水分,水、土兩項衰減合計為45 . 99 ,石棉、漢源兩縣水、土衰減達到60左右。 6 、林地潛力在3986 15034kg / hm ~ 2之間,高等級林地比重小,以大相嶺為界,北部的各縣林地生產力水平高,南部的兩縣林地生產力水平較低。 7 、天然草地生產潛力水平高,潛力在16973 4085kg / ( hm ~ 2 ? a )之間,以高產的一、二、三級草地為主,且近10年來該比例變化不大。

The free - phosphine carbene ruthenium complex [ 1 , 3 - bis ( 2 , 6 - dimethylphenyl ) - 2 - tetrahydroimidazol [ ( c5h5n ) 2 ( cl ) 2ru = chph ( 8 ) was prepared by the reaction of [ 1 , 3 - bis ( 2 , 6 - dimethylphenyl ) - 2 - tetrahydroimidazol ] ( pph3 ) ( cl ) 2ru = chph ( 7 ) with pyridine and used as a highly effective catalyst for the cross metathesis of acrylonitrile with allylbenzene 摘要設計了由1 , 3 -二( 2 , 6 -二甲基苯基) 2 -四氫咪唑基苯亞甲基三苯基膦二氯合釕( 7 )和吡啶反應生成無膦型金屬釕卡賓化合物1 , 3 -二( 2 , 6 -二甲苯基) 2 -四氫咪唑基苯亞甲基2 -吡啶基二氯合釕( 8 ) , 8作為高效催化劑用于丙烯腈和烯丙基苯的交叉交互置換反應。

Abstract : 1 , 2 - bis ( alkylphenylphosphino ) ethane was synthesized via the reaction between lithium alkylphenylphosphide and 1 , 2 - dichloroethane with tert - phosphines as raw materials . their structures were established by ir , h1nmr spectroscopy 文摘:以叔膦為原料,經堿金屬裂解后與1 , 2 -二氯乙烷反應合成1 , 2 -雙膦乙撐化合物.研究了叔膦化合物的裂解方式,堿金屬膦化物的穩定性及對反應條件的影響.產物的結構由ir譜和h1nmr譜證實

Progresses in research on asymmetric hydrocyanation , asymmetric hydroformylation , asymmetric cross - coupling reaction and asymmetric hydrosilylation catalized by palladium - chiral phosphine - catalyst systems are reviewed with 36 references 摘要綜述了鈀手性膦配體催化劑在烯烴的不對稱氫氰化、不對稱羰基化、不對稱交叉偶聯、不對稱氫化硅氫化等方面的研究進展。參考文獻36篇。

Progresses in research on asymmetric hydrocyanation , asymmetric hydroformylation , asymmetric cross - coupling reaction and asymmetric hydrosilylation catalized by palladium - chiral phosphine - catalyst systems are reviewed with 36 references 綜述了鈀手性膦配體催化劑在烯烴的不對稱氫氰化、不對稱羰基化、不對稱交叉偶聯、不對稱氫化硅氫化等方面的研究進展。參考文獻36篇。

The project content : this project consentrates on expanding the relevant production line for 20 thousand tons phosphine in the second - stage , basing on the first issue , 10 thousand tons 項目內容:該項目在現有一期1萬噸草甘膦生產的基礎上擴建二期2萬噸草甘膦原粉及相關產品生產線。

Acceleration and synergism of higher temperature on the mixed fumigation of phosphine and carbon dioxide against insects 高溫對磷化氫和二氧化碳混合熏蒸殺蟲增速增效作用的研究

The conversion of phosphate into phosphine was an important biological reaction with potential value in application 摘要磷酸鹽轉化成磷化氫是一個具有重要潛在價值的生物反應。

Relativity between gastightness and dosage and concentration in recirculation fumigation of phosphine 倉房氣密性與磷化氫環流熏蒸用藥量及濃度的相關性

Produces potassium borohydride , sodium borohydride , trimethyl borate and triphenyl phosphine -專門生產過碳酸鈉,公司簡介產品介紹化工e圈等

Research on decomposition of phosphine to high pure phosphorus using co - p amorphous alloy as catalyst 非晶合金催化分解磷化氫制高純磷的研究

The test of phosphine recirculation fumigation to control pest in bagged grain in newly - built warehouse 新建平房倉包裝糧環流熏蒸殺蟲試驗

Applications of palladium - chiral phosphine - catalysts in asymmetric catalysis of alkenes 手性膦配體催化劑在烯烴不對稱催化反應中的應用

Separation of fatty acids in trialkyl phosphine oxide by macroporous anion exchange resin 大孔陰離子交換樹脂分離三烷基氧膦中有機酸

Diagnostic criteria and principles of management of occupational acute phosphine poisoning 職業性急性磷化氫中毒診斷標準及處理原則

Workplace air - determination of phosphine - ammonium molybdate spectrophotometric method 車間空氣中磷化氫的鉬酸銨分光光度測定方法

Phosphine in ethyne 乙炔中含磷化氫

Synthesis of chiral phosphine ligands and their applications in asymmetric catalysis 手性膦配體合成及其在不對稱催化中的應用

Resistance to phosphine in psocid psocoptera of stored grain in central storages in china 我國儲糧書虱磷化氫抗性調查及測定