目前钨冶炼企业广泛应用的除钼方法是基于钨钼与硫亲合力的差异,针对该方法中存在的钼硫化剂含硫量低且价格高的问题,提出以五硫化二磷P_2S_5作为新型硫化剂,通过其水解产生硫氢根为钼的硫化提供硫源的设想,并从热力学角度考察P_2S_5在水溶液中的水解过程及钨、铝的硫化行为。结果表明:P_2S_5水解产生钼硫化所需要的硫氢根;同时,在pH值7~9的弱碱性溶液中,n(S)/n(Mo)为8时,硫氢根可使溶液中的M0O_4~(2-)完全硫化为硫代钼酸根,而WO_4~(2-)几乎不被硫化。硫化过程中P_2S_5水解还将产生PO_4~(3-),在钨冶炼过程中可用现有技术除去。因此,在钨钼分离工艺中,P_2S_5有望成为一种新型高效的钼硫化剂。

Currently, molybdenum is removed from tungstate solution by taking the advantage of different affinity towards S between W and Mo. Aiming at the problem of low sulfur content and high price of Mo sulfiding agent existing in tungsten extractive industry, we try to utilize the phosphorus pentasulfide as a new sulfiding agent and wish the generated HS-in the hydrolysis of P2S5 to provide the needed sulfur for Mo-sulfidation. Thus, the hydrolysis equilibrium of P2S5 in aqueous solution and thermodynamic behaviour of W amd Mo sulfidation were studied detail. The results show that the generated HS-in the hydrolysis of P2S5 can provide HS-for Mo-sulfidation. And, when n(S)/n(Mo) is 8 and the solution pH value is 7-9, MoO42-can be completely sulfurized to MoS42-, while tungsten still exists as WO42-. In addition, although the impurity PO43- is generated in the hydrolysis of P2S5, it can be removed easily and economically through the current technology in tungsten extractive industry. Therefore

概述了加氢催化剂的预硫化方法的基本原理，介绍了采用不同硫化剂的预硫化技术现状及国内器外预硫化技术的研究现状。指出器外预硫化将不断取代器内预硫化，表明未来开发预硫化催化剂的研究方向和重点。

The fundamental of presulfiding hydrotreatment catalyst was summarized. The current situation of presulfurization technology with different curing agents and national hydrotreatment catalysts technology were introduced. It was pointed out that the ex-situ presulfiding would continue to replace the ex-situ presulfiding, the future development of presulfurization catalyst research direction and focus was suggested.

该文通过介绍电热式硫化机在接头硫化过程中遇到打压、冷却问题,研制一套可靠、实用的硫化打压、冷却装置来保证硫化接头质量。该装置在井下硫化接头中得到了应用,收到良好的效果。

In that paper, by introducing the electric - type vulcanizing machine encountered in the vulcanizing joint suppression, cooling problems, de- velopment of a reliable and practical curing pressure from the cooling device to ensure the quality of vulcanized joints.

钼/活性炭催化剂是一种新型渣油加氢催化剂,其硫化效果直接决定着催化剂的活性和稳定性。实验考察了硫化条件对钼/活性炭催化剂（Mo/AC）硫化度的影响,运用X射线衍射（XRD）、X射线光电子能谱（XPS）、扫描电子显微镜（SEM）和透射电镜（TEM）等手段对硫化态催化剂进行了表征。结果表明,以二硫化碳为硫化剂,正十六烷为硫化介质,在硫化温度350℃,硫化时间3 h,氢气初压6 MPa条件下催化剂硫化度为85%,活性相MoS2堆垛结构为4～6层,晶片长度为6～10 nm,分布比较均匀,具有良好的加氢活性。

Activated carbon supported molybdenum-based catalyst (Mo/AC) is a novel catalyst for hydroprocessing of residuum,and the sulfidation degree determines the activity and stability of catalyst. The sulfurization behavior of Mo/AC was studied. The sulfided catalyst was characterized by means of XRD,XPS,SEM and TEM. Under the following conditions:CS2 as sulfiding agent,n-hexadecane as sulfiding medium,sulfiding temperature 350℃,sulfiding time 3 h,partial pressure of H2 6 MPa,the sulfidation degree of sulfided catalyst was up to 85%. Multilayered MoS2 phase was highly dispersed, with stacking structure of 4~6 layers and length of slabs 6~10 nm. Evaluation demonstrated that sulfided catalyst achieved a high level of conversion at high distillate selectivity with low coke yield in atmospheric residuum conversion.

研究甜菜碱对天然胶乳胶膜硫化特性的影响,并通过Arrhenius方程对胶膜的硫化过程进行动力学分析。结果表明:添加甜菜碱,天然胶乳胶膜的MH和ML减小,t10和t90缩短;胶膜的硫化反应活化能减小,硫化反应速率常数增大,硫化速率提高,交联密度增大。

The effect of betaine on the vulcanization characteristics of NR latex iflm was studied with the use of an oscillating disc rheometer. The results showed thatMH,ML,t10 andt90 decreased with the addition of betaine. The parameters of curing kinetics were then calculated using Arrhenius equation. The curing reaction activation energy (Ea) of NR latex iflm with betaine was smaller than that of original NR latex iflm while the reaction rate constant (k) was higher. With the increase of betaine amount, the curing rate and crosslinking degree of the vulcanizates increased.