N22

Factors affecting Re reduction and the de-

gree of bimetallic-cluster formation were

studied using TPR and XANES. A critical

review of published data on the roles of Cl

and S and their interaction with both the

precursors and metal cluster to form an

active reforming catalyst is also presented

in this article.

E. FURIMSKY

Zeolite-coated Aluminum Substrates

A US Patent [5,260,243] by S.R.Dunne

and A.S. Behan of UOP describes a

method for coating zeolites onto alu-

minized surfaces. A variety of zeolites can

be ground with a binder and a surfactant to

produce a thick slurry that can then be

used to coat an aluminized surface. The

aluminized surface is first pretreated by

heating in an 02-containing atmosphere to

200°C. (A low carbon steel surface does

not give good adhesion to the zeolite

layer.) A synergistic effect is obtained by

mixing chabazite with a faujasite-type ze-

oliteto inhibit muffler corrosion, Thin layers

[ca. 460 pm] of zeolite also offer a benefit

as a desiccant when applied to the internal

surfaces of an aluminum spacer in multiple

pane windows.

J.N. ARMOR

Greater Shape Selectivity to p-Xylene

Recent World Organization patent ap-

plications [WO 93, Nos. 17987 and 179881

by C. Chang and P. Rodewald of Mobil Oil

Corporation describe a catalyst and a pro-

cess forthe shapeselective disproportion-

ation of toluene to p-xylene with yields of

at least 15%. The inventors refer to prior art

publications which describe yields of less

than 9% of p-xylene which are less attrac-

tive because of the expense of separation.

They describe the in-situ deposition of cer-

tain silicon containing compounds on ze-

olites such as ZSM-5. With a feed of to-

luene and 1% of 1 :l mixture of phenylme-

thyl silicone to dimethyl silicone at a WHSV

of 4.0 h-‘, at 446°C with a pressure of 500

psig and H&H, ratio = 2, the p-xylene

selectivity increased from 29% (44% con-

version at 1 h on stream) to 97% (25%

conversion at 199-239 h on stream). The

selectivity remained at 97% once the sili-

cone feed had been discontinued.

In comparison, other silica sources

such as tetraethyl orthosilicate offer much

lower yields and conversions. Examples

are also given for comparison purposes.

J.N. ARMOR

New Publications

A new journal entitled ‘Chemistry for

Sustainable Development” has been an-

nounced. This journal will cover subjects

such as no-waste or low-waste chemical

processes, chemistry without solvents and

solutions, and energy loss prevention in

chemical processes. The first issue in-

cludes a number of papers of interest, for

example ones by K. Zamaraev on “Cata-

lysis and New Technologies for Sustain-

able Development”, L. Manzer on “Envi-

ronmentally Safer Processes: Oppor-

tunities for Catalysis and Process R&D”,

and by V. Gryasznov on “Ecological

Potential of Membrane Catalysis”. With

V.A. Koptyug as Editor-in-Chief, this jour-

applied catalysis A: General Volume 109 No. 2 - 3 March 1994

N23

nal is published by Nauka Publishers, No-

vosibirsk.

Wiley have announced the publication

a new review journal entitled “Heteroge-

neous Chemistry Reviews”. With David

Avnir as Editor-in-Chief, this is a broad-

spectrum, interdisciplinary journal contain-

ing concise reviews, research profiles sub-

mitted by individuals summarising their re-

cent research, educational reviews and

book reviews. Topics to be covered in-

clude reactions at surfaces, adsorption,

heterogeneous catalysis and heteroge-

neous photochemistry. Forthcoming re-

views listed in the announcement of the

journal include those by R.J. Davis (Aro-

matization of zeolite supported Pt clus-

ters), R. lmbihl (temporal and spatial pat-

terns in catalytic reactions on single crystal

surfaces), 8. Delmon (The control of reac-

tion selectivity of catalysts by spillover pro-

cesses) and D.W. Goodman (Heteroge-

neous catalysis: from single crystal to met-

al clusters).

Plenum have announced the publica-

tion of the latest in the series Fundamental

and Applied Catalysis, a volume edited by

Kenzi Tamaru of the Science University of

Tokyo, on “Dynamic Processes on Solid

Surfaces”. This contains chapters con-

tributed by a range of distinguished

Japanese authors which range form the-

oretical aspects of surface reactions to the

application of modern techniques to well

defined catalysts such as metal single

crystals, zeolites and clays, and surface

supported clusters. This series is edited by

M.V. Twigg and M.S. Spencer. Also edited

by M.V. Twigg is a Plenum series on

“Mechanism of Inorganic and Organome-

tallic Reactions”. To prove yet further that

his change of scene from ICI to Johnson

Matthey has not been too detrimental,

Twigg is also listed as one of the authors

(with H.M. Colquhoun and D.J. Thomson,

recently moved from Johnson Mattey to

ICI, Wilmington) of yet another Plenum vol-

ume on “Carbonylation: Direct Synthesis

of Carbonyl Compounds”.

New books in the Elsevier series,

Studies in Surface Science and Catalysis,

include the Proceedings of the 10th Inter-

national Congress of Catalysis (“New

Frontiers in Catalysis, Parts A-C”, Edited

by L. Guczi, F. Solymosi and P. Tetenyi), a

volume on “Fluid Catalytic Cracking:

Science and Technology”, edited by J.S.

Magee and M.M. Mitchell, Jr, the Proceed-

ings of the Third International Conference

on Spillover (“New Aspects of Spillover

Effects in Catalysis”, edited by T. Inui, K.

Fujimoto, T. Uchijima and M. Masai), the

Proceedings of the Third International

Symposium on Heterogeneous Catalysis

and Fine Chemicals (edited by M. Guisnet,

J. Barbier, J. Barrault, C. Bouchoule, D.

Duprez, G. Perot and C. Montassier), and

Catalysis: An Integrated Approach to Ho-

mogeneous, Heterogeneous and Indus-

trial Catalysis, edited by J.A. Moulijn,

P.W.N.M. van Leeuwen and R.A. van San-

ten. Inside information tells me that this

book is the result of a collaboration be-

tween all the Dutch University groups

working on catalysis and that it is based on

a post-graduate course on catalysis given

by these groups for their students.

finally, some recent titles in Catalysis

Today are as follows: Heterogeneous

Catalysis: Retrospect and Prospects (pro-

ceedings of a meeting in honour of Geof-

frey Bond), edited by P.A. Sermon,

Multinuclear Metal Complexes as Novel

Catalysts, a collection of reviews edited by

M.G. White, Regeneration of Hydropro-

cessing Catalysts, a monograph by Ed-

applied catalysis A: General Volume 109 No. 2 - 3 March 1994

N24

ward Furimsky and Franklin E. Massoth,

Catalysis 2000: Strategy and Expectations,

the proceedings of a post-international

Congress workshop edited by Laslo Guczi

and Zoltan Schay, and Fuels and Feed-

stocks: The Next Generation of Catalysts

and Processes, a collection of reviews

edited by G.J. Hutchings and M.S. Scurrell.

JULIAN ROSS

Abbreviations

The following list of abbreviations has

been sent to us by one of our regular

contributors with the following comment: “I

am not an Englishman and I am sure that

lots of readers of scientific literature are not

from English-speaking countries. Often in

articles and scientific literature someone

may notice abbreviations, mainly from

Latin origin. It may be useful to list some of

those abbreviations.” The list sent by our

correspondent is published in the hope

that it may be of assistance to other reader-

s who have, or have had, similar problems.

ad lib., ad libit - ad ljbitum (Latin), at

one’s pleasure

ad val. - ad valorem (Latin), according to

the value

asap. - as soon as possible

ca. - circa (Latin), around

cf. - confer (Latin), compare

c/o - care of; at the address of

cont. - continued

e.g. - exampli gratis (Latin), for example

et al. - et alibi (Latin), and elsewhere; et

alii (Latin), and others

etc. - et cetera (Latin), and so forth

et seq. - et sequences (Latin), and the

following; et sequentes or sequentia

(Latin), and those that follow

excl. - excluding, exclusive

ext. - external, exterior

FOB, f.o. b. - free on board

f.o.c. -free of charge

h/w - herewith

ibid. - in the same place

id. - idem (Latin), the same

i.e. - id est (Latin), that is

incl. - including, inclusive

in lot. cit. - in loco citato (Latin), in the

place cited

N.B., n. b. - nota bene (Latin), mark well,

take notice

op. cit. - operate citato (Latin), in the

work cited

passim - here and there

p.p. - per procurationem (Latin), by the

authority of

P.T.O. - please turn over

Q.P., q.pl. -quantum placet (Latin), as

much as you please

qq.v. - quae vide (Latin), which see (plu-

ral)

qs - quantum sufficit (Latin), as much as

you may suffice

q.v. - quod vide (Latin), which, or whom,

see

R.S.V.P., r.s.v.p. - repondez s’il vous

plait (French), answer if you please

vid. - vide (Latin), see

viz. - videlicet (Latin), namely

vs. -versus (Latin), against

vs. - vide supra (Latin), see above

applied catalysis A: General Volume 109 No. 2 - 3 March 1994